autoit: wait for spawned Au_.exe rather than ending with a potentially-unreliable sleep

packages/autoit.xml

@@ -29,16 +29,22 @@
 		<exit code='1' />
 		<exit code='128' />
 	</remove>
+
+	<remove cmd='%wpkgsoftware%\wpkg\tools\waitforprocess.cmd Au_.exe' />
 	<remove cmd='cmd /c "%PROGRAMFILES(x86)%\autoit3\uninstall.exe" /S' />
+	<remove cmd='%wpkgsoftware%\wpkg\tools\waitforprocess.cmd Au_.exe' />
+
 	<remove cmd='cmd /c rd /s /q "%systemdrive%\ProgramData\Microsoft\Windows\Start Menu\Programs\autoit v3"'>
 		<exit code='1' />
 	</remove>
+
+	<remove cmd='%wpkgsoftware%\wpkg\tools\waitforprocess.cmd Au_.exe' />
 	<remove cmd='cmd /c if exist "%PROGRAMFILES(x86)%\autoit3\scite\uninst.exe" "%PROGRAMFILES(x86)%\autoit3\scite\uninst.exe" /S' />-->
+	<remove cmd='%wpkgsoftware%\wpkg\tools\waitforprocess.cmd Au_.exe' />
+
 	<remove cmd='cmd /c rd /s /q "%PROGRAMFILES(x86)%\autoit3\" 2>nul'> <!-- adding 2>nul stopped the need for deldir.exe -->
 		<exit code='1' />
 	</remove>
-	<!-- without this pause the uninstall value still exists, slow to be deleted maybe therefore this package fails to remove -->
-	<remove cmd='cmd /c "%WPKGSOFTWARE%\wpkg\tools\sleep.cmd" 5' />
 
 	</package>