Remove CompatTool add from setflatpak function

It shouldn't be necessary due to how the Flatpak STL is, and at this point in the setup `$SROOT` doesn't seem to have been set anyway

steamtinkerlaunch

@@ -26878,7 +26878,6 @@ function setflatpak {
 	if [ -n "$FLATPAK_ID" ] && [ "$FLATPAK_ID" == "com.valvesoftware.Steam" ]; then
 		writelog "INFO" "${FUNCNAME[0]} - seems like flatpak is used, because variable 'FLATPAK_ID' exists and points to 'com.valvesoftware.Steam'"
 		INFLATPAK=1
-		CompatTool "add" "$FPBIN/$PROGCMD"
 	else
 		writelog "INFO" "${FUNCNAME[0]} - started $PROGNAME from ${0}"
 	fi