Remove gstVersionCheck

Leftover from GTK3 version of the app. Since "gtk4glsink" is not available in any GStreamer release yet, no point in checking the version.

clapper_src/debug.js

@@ -1,5 +1,4 @@
-const { GLib, Gst } = imports.gi;
+const { GLib } = imports.gi;
-const REQ_GST_VERSION_MINOR = 18;
 
 function debug(msg, levelName)
 {
@@ -15,17 +14,3 @@ function debug(msg, levelName)
             SYSLOG_IDENTIFIER: 'clapper'
     });
 }
-
-function gstVersionCheck()
-{
-    if(Gst.VERSION_MINOR >= REQ_GST_VERSION_MINOR)
-        return;
-
-    debug(
-        'Clapper was designed to' +
-        ` work with GStreamer 1.${REQ_GST_VERSION_MINOR} or later.` +
-        ` Your version is ${Gst.VERSION_MAJOR}.${Gst.VERSION_MINOR}.` +
-        ' Please update GStreamer or expect some things to be broken.',
-        'LEVEL_WARNING'
-    );
-}

clapper_src/widget.js

@@ -18,8 +18,6 @@ var Widget = GObject.registerClass({
 {
     _init()
     {
-        Debug.gstVersionCheck();
-
         super._init();
 
         /* load CSS here to allow using this class