OmniGears: ambient: hide unusable option

'pulse on notifcation' switching makes only sense for enhanced mode

Change-Id: I8b30f4132ddc5aadbd18356ff68ba12aa1a777fa
diff --git a/src/org/omnirom/omnigears/AmbientSettings.java b/src/org/omnirom/omnigears/AmbientSettings.java
index 97baf47..92ade63 100644
--- a/src/org/omnirom/omnigears/AmbientSettings.java
+++ b/src/org/omnirom/omnigears/AmbientSettings.java
@@ -126,6 +126,7 @@
             removePreference(KEY_DOZE_TIME_MODE);
             removePreference(KEY_DOZE_SHAKE_THRESHOLD);
             removePreference(KEY_DOZE_SHAKE_CATEGORY);
+            removePreference(KEY_DOZE_PULSE_MODE);
         }
         updateDozeListMode();
         updateDozeOptions();