When Parallels Desktop.app is unchecked in System Preferences ► Security & Privacy ► Privacy ► Accessibility, I get a Popup notification:
"parallels desktop.app would like to control this computer using accessibility features"
whenever Parallels Desktop 10 is started.
I would like to disable this notification even parallels desktop.app is unchecked under Accessibility settings.
This happens only with Parallels Desktop 10 but not in Parallels Desktop 9.
You see this message because Mac OS X virtual machines require full keyboard grab to receive specific Mac keys. This ability can be granted only via Accessibility features, that is why Parallels Desktop asks the permission to enable this option.
Regrettably this issue can't be fixed only by Parallels Desktop code, it is related to Mac OS 10.10 technically.
The work on this issue is in progress. The fix will be included in an upcoming software update. To enable automatic updates, from the Parallels Desktop Menu, select Preferences > General > Download Updates Automatically.