ultrastardx: remove no longer used pcre dependency (#403953)

pkgs/by-name/ul/ultrastardx/package.nix

@@ -6,7 +6,6 @@
   pkg-config,
   lua,
   fpc,
-  pcre,
   portaudio,
   freetype,
   libpng,
@@ -26,7 +25,6 @@
 
 let
   sharedLibs = [
-    pcre
     portaudio
     freetype
     SDL2
@@ -65,11 +63,6 @@ stdenv.mkDerivation rec {
     libpng
   ] ++ sharedLibs;
 
-  postPatch = ''
-    substituteInPlace src/config.inc.in \
-      --subst-var-by libpcre_LIBNAME libpcre.so.1
-  '';
-
   preBuild =
     let
       items = lib.concatMapStringsSep " " (x: "-rpath ${lib.getLib x}/lib") sharedLibs;