Revert "Added .clang_complete to git ignore list"
Revert "Added .clang_complete to git ignore list"

This reverts commit a3bfd327d79feed69ec8e27e5ebf1c0e67005da9.

kapadia/vexcl,ddemidov/vexcl,Poulpy21/vexcl,ddemidov/vexcl,Poulpy21/vexcl,Poulpy21/vexcl,kapadia/vexcl