Revert "clang-format: [Java] Allow trailing semicolons after enums."

This reverts commit b5bdb2ef59ab922bcb4d6e843fffaee1f7f68a8c.

This doesn't really seem necessary on second though and causes problems
with C++ enum formatting.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@221158 91177308-0d34-0410-b5e6-96231b3b80d8