Not all files get removed and increase game file size.

Files:
\Payload\[appname].app\Data\methods_pointedto_by_uievents.xml
\Payload\[appname].app\Data\platform_native_link.xml
\Payload\[appname].app\Data\preserved_derived_types.xml
\Payload\[appname].app\Data\Managed\ICallSummary.txt
\Payload\[appname].app\Data\Managed\UnityICallRegistration.cpp

Folder:
\Payload\[appname].app\Data\Managed\tempUnstripped

and probably more.