Fast scroll issue fixed (#3593)

* fast scroll fixed in explore activity

* fast scroll fixed in explore activity

* fast scroll issue in explore

* fastscroll removed from explore

Author: 318anushka

app/src/main/res/layout/fragment_category_images.xml

@@ -36,7 +36,6 @@
         android:numColumns="auto_fit"
         android:listSelector="@null"
         android:fadingEdge="none"
-        android:fastScrollEnabled="true"
         />
 
 </RelativeLayout>