Remove button shadow

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

@@ -18,6 +18,7 @@
             android:id="@+id/closeButton"
             android:src="@drawable/ic_close_green"
             style="@style/PokerAnalyticsTheme.TransparentButton"
+            android:stateListAnimator="@null"
             android:layout_width="44dp"
             android:layout_height="44dp"/>
 

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

@@ -17,6 +17,7 @@
             android:id="@+id/closeButton"
             android:src="@drawable/ic_close_green"
             style="@style/PokerAnalyticsTheme.TransparentButton"
+            android:stateListAnimator="@null"
             android:layout_width="44dp"
             android:layout_height="match_parent"/>
 

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

@@ -18,6 +18,7 @@
             android:id="@+id/closeButton"
             android:src="@drawable/ic_close_green"
             style="@style/PokerAnalyticsTheme.TransparentButton"
+            android:stateListAnimator="@null"
             android:layout_width="44dp"
             android:layout_height="match_parent"/>