Remove unneeded JNI registrations.

mojo/mojo_services.gypi

 {
   'targets': [
     {
       'target_name': 'mojo_gles2_bindings',
       'type': 'static_library',
       'sources': [
         'services/gles2/command_buffer.mojom',
         'services/gles2/command_buffer_type_conversions.cc',
         'services/gles2/command_buffer_type_conversions.h',
         'services/gles2/mojo_buffer_backing.cc',
@@ skipping 79 matching lines @@
       'conditions': [
         ['OS=="win" or OS=="android" or OS=="linux" or OS=="mac"', {
           'sources!': [
             'services/native_viewport/native_viewport_stub.cc',
           ],
         }],
         ['OS=="android"', {
           'dependencies': [
             'mojo_jni_headers',
           ],
+          'ldflags!': [
+            # Remove default export list because this lib has different exports.
+            '-Wl,--version-script="<(android_linker_script)"',
+          ],
+          'ldflags': [
+            # Don't export symbols from statically linked libraries.
+            '-Wl,--exclude-libs=ALL',
+          ],
         }],
       ],
     },
   ],
 }