Removed empty directories left after r189960.


git-svn-id: https://llvm.org/svn/llvm-project/clang-tools-extra/trunk@190049 91177308-0d34-0410-b5e6-96231b3b80d8
Fix writing of reformatted files.

If transformations lead to changes that do not need reformatting, the
current strategy will not write those files. With this patch, we just
update the overall state with the changes due to reformatting, and then
write out everything.

git-svn-id: https://llvm.org/svn/llvm-project/clang-tools-extra/trunk@190050 91177308-0d34-0410-b5e6-96231b3b80d8