[PLT-6969] System console setting for the emoji picker (#6809)

* system console setting for the emoji picker

* remove state.emojiPickerEnable

* update url to /admin_console/customization/emoji

webapp/utils/constants.jsx

@@ -891,10 +891,6 @@ export const Constants = {
         WEBRTC_PREVIEW: {
             label: 'webrtc_preview',
             description: 'Enable WebRTC one on one calls'
-        },
-        EMOJI_PICKER_PREVIEW: {
-            label: 'emojipicker',
-            description: 'Enable emoji picker'
         }
     },
     OVERLAY_TIME_DELAY_SMALL: 100,