kdeFrameworks: remove redundant maintainer lists

I am automatically a maintainer of all packages in the set, so there is not
reason to mention me explicitly as the maintainer of every individual package.

pkgs/development/libraries/kde-frameworks/kunitconversion.nix

@@ -1,8 +1,7 @@
-{ mkDerivation, lib, extra-cmake-modules, ki18n, qtbase, }:
+{ mkDerivation, extra-cmake-modules, ki18n, qtbase, }:
 
 mkDerivation {
   name = "kunitconversion";
-  meta = { maintainers = [ lib.maintainers.ttuegel ]; };
   nativeBuildInputs = [ extra-cmake-modules ];
   buildInputs = [ ki18n qtbase ];
   outputs = [ "out" "dev" ];