chore: explicitly disable base image downloading for windows

we can technically support relup for windows
but currently there is no such requirement made from any
users, not opensource users, not commercial users either.

pkg-vsn.sh

@@ -120,19 +120,15 @@ fi
 OTP_VSN="${OTP_VSN:-$(./scripts/get-otp-vsn.sh)}"
 SYSTEM="$(./scripts/get-distro.sh)"
 
-if [ "${PKG_VSN:-}" = 'v5.0.0' ]; then
-    # 5.0.0 is released only with a full name package
-    # e.g. 5.0.0-otp24.2.1-1-ubuntu20.04-amd64
-    case "$SYSTEM" in
-        windows*)
-            ## alway directly build the default package for windows
-            IS_DEFAULT_RELEASE='yes'
-            ;;
-        *)
-            true
-            ;;
-    esac
-fi
+case "$SYSTEM" in
+    windows*)
+        # directly build the default package for windows
+        IS_DEFAULT_RELEASE='yes'
+        ;;
+    *)
+        true
+        ;;
+esac
 
 UNAME="$(uname -m)"
 case "$UNAME" in