To clean up redirects (C++ redirects aka CoreRedirects or engine redirects) run the resavepackages commandlet.
"Drive:\YourEngineVersionOrSource\Engine\Binaries\Win64\UnrealEditor-Cmd.exe" "Drive:\YourProjectPath\YourProject.uproject" -run=resavepackages
To make it faster you can also use -NoShaderCompile -ProjectOnly
.
If using git you can also add -IgnoreChangelist
.