Remove Rust from the tree.

Part 4 for #58

media/libstagefright/gtest/moz.build

@@ -37,13 +37,4 @@ TEST_HARNESS_FILES.gtest += [
     'test_case_1351094.mp4',
 ]
 
-if CONFIG['MOZ_RUST']:
-    UNIFIED_SOURCES += ['TestMP4Rust.cpp',]
-    TEST_HARNESS_FILES.gtest += [
-        '../../../dom/media/test/street.mp4',
-    ]
-    LOCAL_INCLUDES += [
-        '../binding/include',
-    ]
-
 FINAL_LIBRARY = 'xul-gtest'

media/libstagefright/moz.build

@@ -80,11 +80,6 @@ SOURCES += [
     'system/core/libutils/VectorImpl.cpp',
 ]
 
-if CONFIG['MOZ_RUST']:
-    EXPORTS += [
-        'binding/include/mp4parse.h',
-    ]
-
 UNIFIED_SOURCES += [
     'binding/Adts.cpp',
     'binding/AnnexB.cpp',