gst-plugins-bad: remove kate dependency

The kate plugin was removed upstream in 3438b7a88085bf37dfd25ffcae941cdf7617e9dd [1].
This took effect in 1.24.x releases.

[1] https://gitlab.freedesktop.org/gstreamer/gstreamer/-/commit/3438b7a88085bf37dfd25ffcae941cdf7617e9dd

pkgs/development/libraries/gstreamer/bad/default.nix

@@ -23,7 +23,6 @@
 , ldacbt
 , liblc3
 , libass
-, libkate
 , lrdf
 , ladspaH
 , lcms2
@@ -165,7 +164,6 @@ stdenv.mkDerivation (finalAttrs: {
     ldacbt
     liblc3
     libass
-    libkate
     webrtc-audio-processing_1
     libbs2b
     libmodplug