patch 9.1.1735: Cygwin Makefile still checks for Win XP version

Problem:  Cygwin Makefile still checks for Win XP version
Solution: Remove check for WINVER >= 0x600 in Make_cyg_ming.mak
          (Mao-Yining)

Vim's does no longer support Windows XP and Vista since v9.0.0496. So
the condition in Make_cyg_ming.mak to check for any Windows version below
Vista can be removed.

fixes: #18160
closes: #18215

Signed-off-by: Mao-Yining <mao.yining@outlook.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>

Author: mao-yining

src/Make_cyg_ming.mak

@@ -665,9 +665,7 @@ endif
 
 ifeq ($(CHANNEL),yes)
 DEFINES += -DFEAT_JOB_CHANNEL -DFEAT_IPV6
- ifeq ($(shell expr "$$(($(WINVER)))" \>= "$$((0x600))"),1)
 DEFINES += -DHAVE_INET_NTOP
- endif
 endif
 
 ifeq ($(TERMINAL),yes)

src/version.c

@@ -724,6 +724,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1735,
 /**/
     1734,
 /**/