Merge branch 'ab/environment-clean-header'

Code clean-up.

* ab/environment-clean-header:
  environment.h: remove unused variables

Author: gitster

environment.h

@@ -152,8 +152,6 @@ extern char *apply_default_ignorewhitespace;
 extern char *git_attributes_file;
 extern int zlib_compression_level;
 extern int pack_compression_level;
-extern size_t packed_git_window_size;
-extern size_t packed_git_limit;
 extern unsigned long pack_size_limit_cfg;
 extern int max_allowed_tree_depth;