[NFC] Remove extra semicolons in clang/lib/APINotes/APINotesFormat.h

[etcwilde]

Summary

There are some trailing semicolons on namespaces in clang/lib/APINotes/APINotesFormat.h.
These result in warnings while building and don't need to be there.

[xgupta]

This comment was removed by xgupta.

[compnerd]

Thanks for the cleanup!

clang/lib/APINotes/APINotesFormat.h

 enum { TAG_DATA = 1 };
 
 using TagDataLayout =
     llvm::BCRecordLayout<TAG_DATA,        // record ID
                          llvm::BCVBR<16>, // table offset within the blob (see
                                           // below)
                          llvm::BCBlob     // map from name to tag information
                          >;
-}; // namespace tag_block
+} // namespace tag_block
 
 namespace typedef_block {
 enum { TYPEDEF_DATA = 1 };
 
 using TypedefDataLayout =
     llvm::BCRecordLayout<TYPEDEF_DATA,    // record ID
                          llvm::BCVBR<16>, // table offset within the blob (see
                                           // below)
                          llvm::BCBlob // map from name to typedef information
                          >;
-}; // namespace typedef_block
+} // namespace typedef_block
 
 namespace enum_constant_block {
 enum { ENUM_CONSTANT_DATA = 1 };
 
 using EnumConstantDataLayout =
     llvm::BCRecordLayout<ENUM_CONSTANT_DATA, // record ID
                          llvm::BCVBR<16>, // table offset within the blob (see
                                           // below)