config.mak.uname: remove redundant NO_LIBPCRE1_JIT flag

Remove a flag added in my fb95e2e (grep: un-break building with
PCRE >= 8.32 without --enable-jit, 2017-06-01). It's set just below
USE_LIBPCRE=YesPlease, so it's been redundant since
e6c531b (Makefile: make USE_LIBPCRE=YesPlease mean v2, not v1,
2018-03-11).

Signed-off-by: Ævar Arnfjörð Bjarmason <[email protected]>
Signed-off-by: Junio C Hamano <[email protected]>

Author: avar

config.mak.uname

@@ -664,7 +664,6 @@ else
 		NO_GETTEXT =
 		USE_GETTEXT_SCHEME = fallthrough
 		USE_LIBPCRE= YesPlease
-		NO_LIBPCRE1_JIT = UnfortunatelyYes
 		NO_CURL =
 		USE_NED_ALLOCATOR = YesPlease
 	else