config.mak.uname: remove unused NEEDS_SSL_WITH_CURL flag

The NEEDS_SSL_WITH_CURL flag was still being set in one case, but
hasn't existed since 23c4bbe28e ("build: link with curl-defined
linker flags", 2018-11-03). Remove it, and a comment which referred to
it. See 6c109904bc ("Port to HP NonStop", 2012-09-19) for the initial
addition of the comment.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

config.mak.uname

@@ -541,11 +541,6 @@ ifeq ($(uname_S),NONSTOP_KERNEL)
 	# removing the directory at OS releases J06.21 and L17.02.
 	# Default to the older rm until those two releases are deprecated.
 	RM = /bin/rm -f
-	# As detected by './configure'.
-	# Missdetected, hence commented out, see below.
-	#NO_CURL = YesPlease
-	# Added manually, see above.
-	NEEDS_SSL_WITH_CURL = YesPlease
 	NEEDS_CRYPTO_WITH_SSL = YesPlease
 	HAVE_DEV_TTY = YesPlease
 	HAVE_LIBCHARSET_H = YesPlease