bugreport: drop extraneous includes

In the generic parts of the source files, system headers like
<time.h> and <stdio.h> are supposed to be included indirectly
by including "git-compat-util.h", which manages portability issues.

Drop our explicit inclusions and rely on "cache.h", which includes
"git-compat-util.h".

Signed-off-by: Emily Shaffer <emilyshaffer@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Author: nasamuffin

bugreport.c

@@ -1,8 +1,6 @@
 #include "cache.h"
 #include "parse-options.h"
-#include "stdio.h"
 #include "strbuf.h"
-#include "time.h"
 #include "help.h"
 #include "compat/compiler.h"