don't build g2 on ci

build.sh

@@ -11,8 +11,10 @@ pushd build
 	make
 popd
 
-echo Building: data/g2.dat
-./build_g2.sh > /dev/null 2>&1
+if [[ -z "$DISABLE_G2_BUILD" ]]; then
+    echo Building: data/g2.dat
+    ./build_g2.sh > /dev/null 2>&1
+fi
 
 if [[ ! -h openrct2.dll ]]; then 
     ln -s build/openrct2.dll openrct2.dll