Remove old patch as per https://pagure.io/fedora-kde/SIG/issue/230#comment-809272 and removing old version from sources file

plasma-workspace.spec

@@ -63,8 +63,6 @@ Source40:       ssh-agent.conf
 Source41:       spice-vdagent.conf
 
 ## upstream Patches (master branch)
-# https://invent.kde.org/plasma/plasma-workspace/-/merge_requests/1879
-Patch50:        disable-toplevel-fixed-positions-on-wayland.patch
 # Fix for 457019: Can't remove manually added wallpaper
 # (https://bugs.kde.org/show_bug.cgi?id=457019)
 Patch60:        plasma-workspace-5.25.3.1-fix-unable-to-remove-manually-added-wallpaper.patch 

sources

@@ -1,3 +1,2 @@
 SHA512 (breeze-fedora-0.2.tar.gz) = ff800e686b0dcb498f321bb94d3a8274c89c092f5408ef1ec3fc65333f046aea43444144ecaf166792f807014383af87b1180dc7540905fc10dc375309f8b2a8
-SHA512 (plasma-workspace-5.25.3.1.tar.xz) = 8bfef223174a21e9b485cebfaf738281ab42955f2bf7bf6b0d53f836d01fc7f31af8522f40fd21f1cb683345d227ee1a8f19531fcc8028a3740212a2dccfc831
 SHA512 (plasma-workspace-5.25.4.tar.xz) = 4f06eedcae47d3c03e0d604a95242d13284bf64891d1c982884a482583ff81ba60202b60e63cc46c3f7e35b98e2910bf69e451fe1aedb64af387add8bcaf4e87