cleanup unused ressources

Remove unused icons and components

Tuleap: #124
Change-Id: I696a72604b880fd13b9c406bffe3371aab2ec189

ring-android/app/src/main/res/layout/frag_call.xml

@@ -134,7 +134,7 @@
             android:layout_gravity="left"
             android:layout_marginLeft="15dp"
             android:layout_marginRight="10dp"
-            android:src="@drawable/ic_action_call" />
+            android:src="@drawable/ic_call_white_24dp" />
 
         <TextView
             android:id="@+id/call_status_txt"

ring-android/app/src/main/res/layout/frag_dialing.xml

@@ -40,7 +40,7 @@
                 android:layout_weight="30"
                 android:background="@drawable/item_keyboard_choice_selector"
                 android:contentDescription="@string/dial_numeric_pad"
-                android:drawableLeft="@drawable/ic_action_dial_pad_light"
+                android:drawableLeft="@drawable/ic_dialpad_white_24dp"
                 android:text="123"
                 android:textColor="@color/white"
                 android:textSize="15sp" />
@@ -71,7 +71,7 @@
             android:layout_height="100dp"
             android:layout_centerHorizontal="true"
             android:background="@drawable/call_button"
-            android:src="@drawable/ic_action_call" />
+            android:src="@drawable/ic_call_white_24dp" />
     </RelativeLayout>
 
 </RelativeLayout>
\ No newline at end of file

ring-android/app/src/main/res/layout/item_contact.xml

@@ -79,7 +79,7 @@ as that of the covered work.
                 android:layout_margin="5dp"
                 android:background="@null"
                 android:contentDescription="@string/contact_quick_call_description"
-                android:src="@drawable/ic_action_call" />
+                android:src="@drawable/ic_call_white_24dp" />
 
             <ImageButton
                 android:id="@+id/quick_message"
@@ -88,7 +88,7 @@ as that of the covered work.
                 android:layout_margin="5dp"
                 android:background="@null"
                 android:contentDescription="@string/contact_quick_msg_description"
-                android:src="@drawable/ic_action_chat" />
+                android:src="@drawable/ic_call_white_24dp" />
         </LinearLayout>
     </RelativeLayout>