Remove broken custom dialog theme

Closes #3121

// FREEBIE

AndroidManifest.xml

@@ -51,7 +51,7 @@
                android:value="GlideModule" />
 
     <activity android:name=".RegistrationProblemsActivity"
-              android:theme="@style/TextSecure.Light.Dialog"
+              android:theme="@style/Theme.AppCompat.Light.DialogWhenLarge"
               android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize"/>
 
     <activity android:name=".CountrySelectionActivity"
@@ -179,7 +179,7 @@
               android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize"/>
 
     <activity android:name=".ReceiveKeyActivity"
-              android:theme="@style/TextSecure.Light.Dialog"
+              android:theme="@style/Theme.AppCompat.Light.DialogWhenLarge"
               android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize"/>
     
     <activity android:name=".ApplicationPreferencesActivity"

res/values/themes.xml

@@ -227,32 +227,4 @@
 
         <item name="group_members_dialog_icon">@drawable/ic_group_white_24dp</item>
     </style>
-
-    <style name="TextSecure.Light.Dialog"
-           parent="Theme.AppCompat.Light.DialogWhenLarge"
-           tools:ignore="NewApi">
-        <item name="android:windowFrame">@null</item>
-        <item name="android:windowTitleStyle">@style/TextSecureDialogWindowTitle</item>
-        <item name="android:windowBackground">@drawable/dialog_full_holo_light</item>
-        <item name="android:windowIsFloating">true</item>
-        <item name="android:windowContentOverlay">@null</item>
-        <item name="android:windowSoftInputMode">stateUnspecified|adjustPan</item>
-        <item name="android:windowActionBar">false</item>
-        <item name="android:windowTitleSize">0dp</item>
-        <item name="android:windowActionModeOverlay">true</item>
-
-        <item name="android:colorBackgroundCacheHint">@null</item>
-
-        <item name="android:buttonBarStyle">@style/TextSecureDialogButtonBar</item>
-        <item name="android:borderlessButtonStyle">@style/TextSecureBorderlessButtonSmall</item>
-        <item name="android:textColor">@color/black</item>
-        <item name="android:textSize">16sp</item>
-        <item name="android:textStyle">normal</item>
-
-        <item name="android:listPreferredItemPaddingLeft">16dip</item>
-        <item name="android:listPreferredItemPaddingRight">16dip</item>
-        <item name="android:listPreferredItemPaddingStart">16dip</item>
-        <item name="android:listPreferredItemPaddingEnd">16dip</item>
-    </style>
-
 </resources>

src/org/thoughtcrime/securesms/ReceiveKeyActivity.java

@@ -79,7 +79,6 @@ public class ReceiveKeyActivity extends PassphraseRequiredActionBarActivity {
   protected void onCreate(Bundle state, @NonNull MasterSecret masterSecret) {
     this.masterSecret = masterSecret;
     setContentView(R.layout.receive_key_activity);
-    getSupportActionBar().hide();
 
     initializeResources();