git.el: Remove the env parameter in git-call-process and git-call-process-string.
git.el: Remove the env parameter in git-call-process and git-call-process-string.

All callers that need to change the environment now set
process-environment themselves.

Signed-off-by: Alexandre Julliard <a3c1c71ac0d85b781251f68481a696b8e4d0781d@winehq.org>

destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git