gn2bp: Remove code for proto_descriptor_module

Which is not used for cronet
Test: ./update_results.sh

Change-Id: I9386bd6617fbe1d1bf4d175ed9958e70f9936c68
diff --git a/tools/gn2bp/gen_android_bp b/tools/gn2bp/gen_android_bp
index f50393c..0466680 100755
--- a/tools/gn2bp/gen_android_bp
+++ b/tools/gn2bp/gen_android_bp
@@ -555,26 +555,6 @@
   return source_module
 
 
-def create_cc_proto_descriptor_module(blueprint, target):
-  bp_module_name = label_to_module_name(target.name)
-  module = Module('genrule', bp_module_name, target.name)
-  module.tool_files.add('tools/gen_cc_proto_descriptor.py')
-  module.cmd = ' '.join([
-      '$(location tools/gen_cc_proto_descriptor.py)', '--gen_dir=$(genDir)',
-      '--cpp_out=$(out)', '$(in)'
-  ])
-  module.genrule_headers.add(module.name)
-  module.srcs.update(
-      ':' + label_to_module_name(dep) for dep in target.proto_deps)
-  module.srcs.update(
-      gn_utils.label_to_path(src)
-      for src in target.inputs
-      if "tmp.gn_utils" not in src)
-  module.out.update(target.outputs)
-  blueprint.add_module(module)
-  return module
-
-
 def create_gen_version_module(blueprint, target, bp_module_name):
   module = Module('genrule', bp_module_name, gn_utils.GEN_VERSION_TARGET)
   script_path = gn_utils.label_to_path(target.script)
@@ -883,9 +863,7 @@
     if module is None:
       return None
   elif target.type == 'action':
-    if re.match('.*gen_cc_.*_descriptor$', target.name):
-      module = create_cc_proto_descriptor_module(blueprint, target)
-    elif target.type == 'action' and \
+    if target.type == 'action' and \
         target.name == gn_utils.GEN_VERSION_TARGET:
       module = create_gen_version_module(blueprint, target, bp_module_name)
     else: