Remove all cygwin CHOST changes

Since #5448 CHOST defaults to cygwin now, so this
is no longer needed.

enscript/PKGBUILD

@@ -39,11 +39,10 @@ prepare() {
 
 build() {
   cd $pkgname-$pkgver
-  local CYGWIN_CHOST="${CHOST/-msys/-cygwin}"
   ./configure \
     --prefix=/usr \
     --sysconfdir=/etc/enscript \
-    --build=${CYGWIN_CHOST}
+    --build=${CHOST}
   make
 }