More work on getting a truly clean build

EnginePatches/EnginePatch

@@ -35,27 +35,3 @@ diff -u --recursive UnrealEngine-5.3.1-release/Engine/Source/Runtime/Application
  		// If we're rendering offscreen, use the "dummy" SDL video driver
  		if (FParse::Param(FCommandLine::Get(), TEXT("RenderOffScreen")) && !getenv("SDL_VIDEODRIVER"))
  		{
-diff -u --recursive UnrealEngine-5.3.1-release/Setup.bat UnrealEngine/Setup.bat
---- UnrealEngine-5.3.1-release/Setup.bat	2023-09-27 09:48:07.000000000 -0400
-+++ UnrealEngine/Setup.bat	2025-06-19 17:50:32.284629525 -0400
-@@ -28,7 +28,7 @@
- 
- rem Register the engine installation...
- if not exist .\Engine\Binaries\Win64\UnrealVersionSelector-Win64-Shipping.exe goto :no_unreal_version_selector
--.\Engine\Binaries\Win64\UnrealVersionSelector-Win64-Shipping.exe /register
-+.\Engine\Binaries\Win64\UnrealVersionSelector-Win64-Shipping.exe /register /unattended
- :no_unreal_version_selector
- 
- rem Done!
-diff -u --recursive UnrealEngine-5.3.1-release/Setup.sh UnrealEngine/Setup.sh
---- UnrealEngine-5.3.1-release/Setup.sh	2023-09-27 09:48:07.000000000 -0400
-+++ UnrealEngine/Setup.sh	2025-06-19 17:47:01.621969761 -0400
-@@ -80,7 +80,7 @@
- 	echo Register the engine installation...
- 	if [ -f Engine/Binaries/Linux/UnrealVersionSelector-Linux-Shipping ]; then
- 		pushd Engine/Binaries/Linux > /dev/null
--		./UnrealVersionSelector-Linux-Shipping -register > /dev/null &
-+		./UnrealVersionSelector-Linux-Shipping -register -unattended > /dev/null &
- 		popd > /dev/null
- 	fi
- 

EnginePatches/PatchedDosFiles

@@ -1 +0,0 @@
-Setup.bat