No need to update version in generated code (protocolbuffers#6471)

generate_descriptor will handle that

update_version.py

@@ -147,31 +147,9 @@ def RewritePortDef(line):
         '#define GOOGLE_PROTOBUF_MIN_LIBRARY_VERSION %s' % cpp_version,
         line)
     return line
-  def RewritePbH(line):
-    line = re.sub(
-        r'^#if PROTOBUF_VERSION < .*$',
-        '#if PROTOBUF_VERSION < %s' % cpp_version,
-        line)
-    line = re.sub(
-        r'^#if .* < PROTOBUF_MIN_PROTOC_VERSION$',
-        '#if %s < PROTOBUF_MIN_PROTOC_VERSION' % cpp_version,
-        line)
-    return line
-
+
   RewriteTextFile('src/google/protobuf/stubs/common.h', RewriteCommon)
   RewriteTextFile('src/google/protobuf/port_def.inc', RewritePortDef)
-  RewriteTextFile('src/google/protobuf/any.pb.h', RewritePbH)
-  RewriteTextFile('src/google/protobuf/api.pb.h', RewritePbH)
-  RewriteTextFile('src/google/protobuf/descriptor.pb.h', RewritePbH)
-  RewriteTextFile('src/google/protobuf/duration.pb.h', RewritePbH)
-  RewriteTextFile('src/google/protobuf/empty.pb.h', RewritePbH)
-  RewriteTextFile('src/google/protobuf/field_mask.pb.h', RewritePbH)
-  RewriteTextFile('src/google/protobuf/source_context.pb.h', RewritePbH)
-  RewriteTextFile('src/google/protobuf/struct.pb.h', RewritePbH)
-  RewriteTextFile('src/google/protobuf/timestamp.pb.h', RewritePbH)
-  RewriteTextFile('src/google/protobuf/type.pb.h', RewritePbH)
-  RewriteTextFile('src/google/protobuf/wrappers.pb.h', RewritePbH)
-  RewriteTextFile('src/google/protobuf/compiler/plugin.pb.h', RewritePbH)
 
 
 def UpdateCsharp():