Remove all cygwin CHOST changes

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

sqlite/PKGBUILD

@@ -81,7 +81,6 @@ build() {
 "
 
   export MSYSTEM=CYGWIN
-  local CYGWIN_CHOST="${CHOST/-msys/-cygwin}"
 
   mkdir -p build-${_srcver}-${MSYSTEM_CHOST}
   cd build-${_srcver}-${MSYSTEM_CHOST}
@@ -89,7 +88,7 @@ build() {
     --prefix=/usr \
     --sysconfdir=/etc \
     --localstatedir=/var \
-    --build=${CYGWIN_CHOST} \
+    --build=${CHOST} \
     --enable-shared \
     --enable-static \
     --enable-readline \