Draft: repository: Remove ApplyGitattributes
As we are using .gitattributes
files from the root tree instead of
writing into info/gitattributes, ApplyGitAttributes GRPC is no longer
needed. We remove it from the code base in this commit.
Depends on !6547 (closed)
Closes #5347 (closed) Closes gitlab#414854 (closed)
Edited by Eric Ju