[orca] Mouse review: Don't announce "unselected" for cells

[Joanmarie Diggs <joanied src gnome org>]

commit bfc43ef481fddfdc0369e87eba6cdea74d36bceb
Author: Joanmarie Diggs <jdiggs igalia com>
Date:   Mon Jul 15 10:55:45 2019 -0400

    Mouse review: Don't announce "unselected" for cells
    
    It's assumed mouse review users have sufficient vision to see this visually.

 src/orca/speech_generator.py | 3 +++
 1 file changed, 3 insertions(+)
---
diff --git a/src/orca/speech_generator.py b/src/orca/speech_generator.py
index 402ba86b0..e87cd5849 100644
--- a/src/orca/speech_generator.py
+++ b/src/orca/speech_generator.py
@@ -837,6 +837,9 @@ class SpeechGenerator(generator.Generator):
         if _settingsManager.getSetting('onlySpeakDisplayedText'):
             return []
 
+        if args.get('inMouseReview'):
+            return []
+
         if not obj:
             return []