Ports: Remove ScummVM FMOPL patch

This patch is no longer required after this PR fixes the x86_64 PLT
trampoline:
https://github.com/SerenityOS/serenity/pull/10711

Ports/scummvm/patches/fmopl-disable-mame.patch

@@ -1,10 +0,0 @@
---- scummvm-2.5.0/audio/fmopl.cpp	2021-10-01 13:52:37.000000000 +0200
-+++ scummvm-2.5.0-patched/audio/fmopl.cpp	2021-10-24 16:20:17.548613828 +0200
-@@ -69,7 +69,6 @@
- 
- const Config::EmulatorDescription Config::_drivers[] = {
- 	{ "auto", "<default>", kAuto, kFlagOpl2 | kFlagDualOpl2 | kFlagOpl3 },
--	{ "mame", _s("MAME OPL emulator"), kMame, kFlagOpl2 },
- #ifndef DISABLE_DOSBOX_OPL
- 	{ "db", _s("DOSBox OPL emulator"), kDOSBox, kFlagOpl2 | kFlagDualOpl2 | kFlagOpl3 },
- #endif