emacs/titaniumenv: Drop broken files

These files don't even parse using `nix-instantiate --parse`:
> error: undefined variable 'haskell-mode'
> error: undefined variable 'lib'

While these issues could be trivially fixed, the fact that these files
are not even parsable by nix-instantiate shows me that they are probably
unnecessary.

pkgs/applications/editors/emacs/elisp-packages/manual-packages/ghc-mod/default.nix

@@ -1,27 +0,0 @@
-{ lib
-, pkgs
-, melpaBuild
-, haskellPackages
-, writeText
-}:
-
-melpaBuild {
-  pname = "ghc";
-
-  inherit (haskellPackages.ghc-mod) version src;
-
-  packageRequires = [ haskell-mode ];
-
-  propagatedUserEnvPkgs = [ haskellPackages.ghc-mod ];
-
-  recipe = writeText "recipe" ''
-    (ghc-mod :repo "DanielG/ghc-mod" :fetcher github :files ("elisp/*.el"))
-  '';
-
-  fileSpecs = [ "elisp/*.el" ];
-
-  meta = {
-    description = "An extension of haskell-mode that provides completion of symbols and documentation browsing";
-    license = lib.licenses.bsd3;
-  };
-}

pkgs/development/mobile/titaniumenv/default.nix

@@ -3,7 +3,6 @@
 rec {
   titaniumsdk = let
     titaniumSdkFile = if tiVersion == "8.2.1.GA" then ./titaniumsdk-8.2.nix
-      else if tiVersion == "7.5.1.GA" then ./titaniumsdk-7.5.nix
       else if tiVersion == "8.3.2.GA" then ./titaniumsdk-8.3.nix
       else throw "Titanium version not supported: "+tiVersion;
     in

pkgs/development/mobile/titaniumenv/titaniumsdk-7.5.nix

@@ -1,111 +0,0 @@
-{ stdenv, fetchurl, unzip, makeWrapper }:
-
-let
-  # Gradle is a build system that bootstraps itself. This is what it actually
-  # downloads in the bootstrap phase.
-  gradleAllZip = fetchurl {
-    url = "http://services.gradle.org/distributions/gradle-4.1-all.zip";
-    sha256 = "1rcrh263vq7a0is800y5z36jj97p67c6zpqzzfcbr7r0qaxb61sw";
-  };
-
-  # A Titanium-Android build requires proguard plugins. We create a fake
-  # repository so that Gradle does not attempt to download them in the builder.
-  # Since there are only 3 plugins required, this is still (sort of) manageable
-  # without a generator.
-  proguardVersion = "5.3.3";
-
-  proguardGradlePOM = fetchurl {
-    url = "mirror://maven/net/sf/proguard/proguard-gradle/${proguardVersion}/proguard-gradle-${proguardVersion}.pom";
-    sha256 = "03v9zm3ykfkyb5cs5ald07ph103fh68d5c33rv070r29p71dwszj";
-  };
-  proguardGradleJAR = fetchurl {
-    url = "mirror://maven/net/sf/proguard/proguard-gradle/${proguardVersion}/proguard-gradle-${proguardVersion}.jar";
-    sha256 = "0shhpsjfc5gam15jnv1hk718v5c7vi7dwdc3gvmnid6dc85kljzk";
-  };
-  proguardParentPOM = fetchurl {
-    url = "mirror://maven/net/sf/proguard/proguard-parent/${proguardVersion}/proguard-parent-${proguardVersion}.pom";
-    sha256 = "0mv0zbwyw8xa4mkc5kw69y5xqashkz9gp123akfvh9f6152l3202";
-  };
-  proguardBasePOM = fetchurl {
-    url = "mirror://maven/net/sf/proguard/proguard-base/${proguardVersion}/proguard-base-${proguardVersion}.pom";
-    sha256 = "1jnr6zsxfimb8wglqlwa6rrdc3g3nqf1dyw0k2dq9cj0q4pgn7p5";
-  };
-  proguardBaseJAR = fetchurl {
-    url = "mirror://maven/net/sf/proguard/proguard-base/${proguardVersion}/proguard-base-${proguardVersion}.jar";
-    sha256 = "11nwdb9y84cghcx319nsjjf9m035s4s1184zrhzpvaxq2wvqhbhx";
-  };
-
-  # Put the downloaded plugins in a fake Maven repository
-  fakeMavenRepo = stdenv.mkDerivation {
-    name = "fake-maven-repo";
-    buildCommand = ''
-      mkdir -p $out
-      cd $out
-      mkdir -p net/sf/proguard/proguard-gradle/${proguardVersion}
-      cp ${proguardGradlePOM} net/sf/proguard/proguard-gradle/${proguardVersion}/proguard-gradle-${proguardVersion}.pom
-      cp ${proguardGradleJAR} net/sf/proguard/proguard-gradle/${proguardVersion}/proguard-gradle-${proguardVersion}.jar
-      mkdir -p net/sf/proguard/proguard-parent/${proguardVersion}
-      cp ${proguardParentPOM} net/sf/proguard/proguard-parent/${proguardVersion}/proguard-parent-${proguardVersion}.pom
-      mkdir -p net/sf/proguard/proguard-base/${proguardVersion}
-      cp ${proguardBasePOM} net/sf/proguard/proguard-base/${proguardVersion}/proguard-base-${proguardVersion}.pom
-      cp ${proguardBaseJAR} net/sf/proguard/proguard-base/${proguardVersion}/proguard-base-${proguardVersion}.jar
-    '';
-  };
-in
-stdenv.mkDerivation {
-  pname = "mobilesdk";
-  version = "7.5.1.GA";
-
-  src =
-    if (stdenv.system == "i686-linux" || stdenv.system == "x86_64-linux") then
-      fetchurl {
-        url = "https://builds.appcelerator.com/mobile/7_5_X/mobilesdk-7.5.1.v20190124152315-linux.zip";
-        sha256 = "1ihyh6szl9a2gbdgv13msd3g7i3xi9ifmgsh6v562hqlfi4lixng";
-      }
-    else if stdenv.system == "x86_64-darwin" then
-      fetchurl {
-        url = "https://builds.appcelerator.com/mobile/7_5_X/mobilesdk-7.5.1.v20190124152315-osx.zip";
-        sha256 = "1whs1j7fkk2hxr4nxq50d7ic5wj83b1i1jl0p722sqbvkmgxssa2";
-      }
-    else throw "Platform: ${stdenv.system} not supported!";
-
-  nativeBuildInputs = [ makeWrapper unzip ];
-
-  buildCommand = ''
-    mkdir -p $out
-    cd $out
-    (yes y | unzip $src) || true
-
-    # Rename ugly version number
-    cd mobilesdk/*
-    mv * 7.5.1.GA
-    cd *
-
-    # Patch bundled gradle build infrastructure to make shebangs work
-    patchShebangs android/templates/gradle
-
-    # Substitute the gradle-all zip URL by a local file to prevent downloads from happening while building an Android app
-    sed -i -e "s|distributionUrl=|#distributionUrl=|" android/templates/gradle/gradle/wrapper/gradle-wrapper.properties
-    cp ${gradleAllZip} android/templates/gradle/gradle/wrapper/gradle-4.1-all.zip
-    echo "distributionUrl=gradle-4.1-all.zip" >> android/templates/gradle/gradle/wrapper/gradle-wrapper.properties
-
-    # Patch maven central repository with our own local directory. This prevents the builder from downloading Maven artifacts
-    sed -i -e 's|mavenCentral()|maven { url "${fakeMavenRepo}" }|' android/templates/build/proguard.gradle
-
-    # Patch the strip frameworks script in the iPhone build template to not let
-    # it skip the strip phase. This is caused by an assumption on the file
-    # permissions in which Nix deviates from the standard.
-    sed -i -e "s|-perm +111|-perm /111|" iphone/templates/build/strip-frameworks.sh
-
-    # Patch some executables
-
-    ${if stdenv.system == "i686-linux" then
-      ''
-        patchelf --set-interpreter ${stdenv.cc.libc}/lib/ld-linux.so.2 android/titanium_prep.linux32
-      ''
-      else lib.optionalString (stdenv.system == "x86_64-linux") ''
-        patchelf --set-interpreter ${stdenv.cc.libc}/lib/ld-linux-x86-64.so.2 android/titanium_prep.linux64
-      ''
-    }
-  '';
-}