jhbuild: Do not build custom gstreamer

Ubuntu now has 1.24.X which is newer.

Leave the module in jhbuild so people can easily build it. We could also remove the build dependencies for it at some point.

images/wkdev_sdk/jhbuild/webkit-sdk-deps.modules

@@ -9,7 +9,6 @@
       <dep package="dicts"/>
       <dep package="libwpe"/>
       <dep package="wpebackend-fdo"/>
-      <dep package="gstreamer"/>
       <dep package="sparkle-cdm"/>
       <dep package="libbacktrace"/>
     </dependencies>
@@ -84,8 +83,7 @@
   <meson id="gstreamer" mesonargs="-Dlibnice=enabled -Dpython=enabled -Dintrospection=enabled -Dgst-plugins-bad:microdns=disabled -Dgst-plugins-bad:avtp=disabled -Dexamples=disabled -Dtests=disabled -Ddoc=disabled">
     <branch repo="gstreamer.freedesktop.org"
             checkoutdir="gstreamer"
-            module="gstreamer.git"
-            tag="1.22.6"/>
+            module="gstreamer.git"/>
     <dependencies>
       <dep package="openh264"/>
     </dependencies>

scripts/container-only/wkdev-test-host-integration

@@ -110,11 +110,6 @@ run() {
     run_test "Test PulseAudio: (should work if it works on the host)" \
         pactl info
 
-    # Our self-compiled GStreamer interferes with the system-provided one, avoid that for testing epiphany.
-    unset GST_PLUGIN_PATH_1_0
-    unset GST_PLUGIN_SCANNER
-    unset LD_LIBRARY_PATH
-
     run_test "Test Epiphany browser: (try youtube.com, CSS 3D demos, WebGL, etc.)" \
         epiphany
 }