Remove fuchsia_test from gyp build

Review URL: https://codereview.chromium.org/2168073003 .

README.fuchsia

@@ -1,41 +0,0 @@
-This is a README file describing how to build Dart for Fuchsia. It assumes that
-you have built the magenta kernel under //magenta, its toolchains are
-under //toolchains, and that you have a Dart checkout under //dart. It is early
-days and this is crufty. The process will improve from here.
-
-1. First, set up some symlinks in your Dart checkout:
-
-  //dart/third_party/fuchsia_tools/toolchains
-      -> symlinked to //toolchains
-  //dart/third_party/fuchsia_tools/sysroot/x86_64/usr
-      -> symlinked to //magenta/build-magenta-qemu-x86-64/sysroot/
-
-  Also, copy the linker script:
-
-  //magenta$ cp kernel/arch/x86/64/user.ld build-magenta-qemu-x86-64/sysroot/
-
-  and similarly for arm64.
-
-2. Build:
-
-  //dart$ tools/build.py -m product -a x64 --os=fuchsia fuchsia_test
-
-  This will produce //dart/out/ProductFuchsiaX64/fuchsia_test
-
-3. Strip it:
-
-  //dart$ third_party/fuchsia_tools/toolchains/x86_64-elf-5.3.0-Linux-x86_64/bin/x86_64-elf-strip out/ProductFuchsiaX64/fuchsia_test -o out/ProductFuchsiaX64/fuchsia_test.stripped
-
-4. Make a file //magenta/fuchsia_test.manifest containing:
-
-  bin/fuchsia_test=//dart/out/ProductFuchsiaX64/fuchsia_test.stripped
-
-  Where //dart is the actual path to your Dart checkout.
-
-5. Make an extra bootfs:
-
-  //magenta$ build-magenta-qemu-x86-64/tools/mkbootfs -o fuchsia_test.bootfs fuchsia_test.manifest
-
-6. Run:
-
-  //magenta$ ./scripts/run-magenta-x86-64 -x fuchsia_test.bootfs

dart.gyp

@@ -34,13 +34,6 @@
         'runtime/dart-runtime.gyp:sample_extension',
       ],
     },
-    {
-      'target_name': 'fuchsia_test',
-      'type': 'none',
-      'dependencies': [
-        'runtime/dart-runtime.gyp:fuchsia_test',
-      ],
-    },
     {
       # This is the target that is built on the VM build bots.  It
       # must depend on anything that is required by the VM test

runtime/bin/bin.gypi

@@ -1069,25 +1069,6 @@
         },
       ]
     },
-    {
-      'target_name': 'fuchsia_test',
-      'type': 'executable',
-      'dependencies': [
-        'libdart_nosnapshot',
-      ],
-      'include_dirs': [
-        '..',
-        '../include',
-      ],
-      'sources': [
-        'fuchsia_test.cc',
-        'log_android.cc',
-        'log_fuchsia.cc',  # TODO(zra): Move to libdart_builtin when ready.
-        'log_linux.cc',
-        'log_macos.cc',
-        'log_win.cc',
-      ],
-    },
     {
       # dart binary with a snapshot of corelibs built in.
       'target_name': 'dart',