gst-plugins-base: don't try to build with gles2/egl support

So we have a reproducibel build. Also the egl backend doesn't build:

gst-libs/gst/gl/egl/gstglcontext_egl.c:773:7: error: too few arguments to function 'gst_gl_window_win32_create_window'

mingw-w64-gst-plugins-base/PKGBUILD

@@ -4,7 +4,7 @@ _realname=gst-plugins-base
 pkgbase=mingw-w64-${_realname}
 pkgname="${MINGW_PACKAGE_PREFIX}-${_realname}"
 pkgver=1.16.0
-pkgrel=2
+pkgrel=3
 pkgdesc="GStreamer Multimedia Framework Base Plugins (mingw-w64)"
 arch=('any')
 url="https://gstreamer.freedesktop.org/"
@@ -55,6 +55,9 @@ build() {
     -Dalsa=disabled \
     -Dcdparanoia=disabled \
     -Dlibvisual=disabled \
+    -Dgl_winsys=win32 \
+    -Dgl_api=opengl \
+    -Dgl_platform=wgl \
     ../${_realname}-${pkgver}
 
   ninja