Remove useless option for colorHint in elements which not need it

res/layout/account_setup.xml

@@ -65,7 +65,6 @@
             android:visibility="gone"
             android:layout_marginBottom="10dp"
             android:textColor="@color/login_text_color"
-            android:textColorHint="@color/login_text_hint_color"
             android:contentDescription="@string/auth_expired_basic_auth_toast"/>
 
 	    <FrameLayout 
@@ -113,7 +112,6 @@
             android:drawablePadding="5dp"
             android:gravity="center_vertical"
             android:textColor="@color/login_text_color"
-            android:textColorHint="@color/login_text_hint_color"
             android:text="@string/auth_testing_connection"
             android:minHeight="32dp"
             android:contentDescription="@string/auth_testing_connection"/>
@@ -127,7 +125,6 @@
             android:text="@string/oauth_check_onoff"
             android:textAppearance="?android:attr/textAppearanceSmall"
             android:textColor="@color/primary"
-            android:textColorHint="@color/login_text_hint_color"
             android:contentDescription="@string/oauth_check_onoff"
             />
 
@@ -193,7 +190,6 @@
             android:gravity="center_vertical"
             android:text="@string/auth_unauthorized"
             android:textColor="@color/login_text_color"
-            android:textColorHint="@color/login_text_hint_color"
             android:contentDescription="@string/auth_unauthorized"/>
 
         <android.support.v7.widget.AppCompatButton
@@ -222,7 +218,6 @@
                 android:paddingTop="5dp"
                 android:text="@string/auth_register"
                 android:textColor="@color/login_text_color"
-                android:textColorHint="@color/login_text_hint_color"
                 android:contentDescription="@string/auth_register"/>
             
         </LinearLayout>