audio/gnome-podcasts: drop obsolete patch after af2c0a4d

audio/gnome-podcasts/files/patch-pango-1.50

-Drop after x11-toolkits/pango >= 1.51 update
-
-[pango-sys 0.18.0] Package dependency requirement 'pango >= 1.51' could not be satisfied.
-[pango-sys 0.18.0] Package 'pango' has version '1.50.14', required version is '>= 1.51'
-
---- cargo-crates/gtk4-0.8.1/Cargo.toml.orig	1970-01-01 00:00:00 UTC
-+++ cargo-crates/gtk4-0.8.1/Cargo.toml
-@@ -129,7 +129,7 @@ gnome_46 = [
- gnome_46 = [
-     "v4_14",
-     "cairo-rs/v1_16",
--    "pango/v1_52",
-+    "pango/v1_50",
-     "gdk-pixbuf/v2_42",
-     "gio_v2_80",
- ]