Revert "im_ic_attach → im_ic_add_circle"

This reverts commit fb524186d1.

smali/res/layout/write_bar_i.xml

@@ -146,7 +146,7 @@
                     android:background="@drawable/highlight_icon"
                     android:contentDescription="@string/accessibility_msg_send_attach"
                     android:padding="8.0dip"
-                    android:src="?im_ic_add_circle"
+                    android:src="?im_ic_attach"
                     android:tint="?accent" />
 
                 <com.vk.im.ui.views.RichEditText
@@ -273,4 +273,4 @@
             </FrameLayout>
         </FrameLayout>
     </FrameLayout>
-</merge>
+</merge>

smali/res/values-v28/styles.xml

@@ -103,7 +103,6 @@
 
     <style name="Vk.Theme.VkApp" parent="@style/Vk.Theme">
         <item name="android:windowLayoutInDisplayCutoutMode">default</item>
-        <item name="im_ic_add_circle">@drawable/ic_add_circle_outline_28</item>
         <item name="im_avatars_combine">true</item>
         <item name="im_bg_chat">?background_content</item>
         <item name="im_bg_install_vkme_btn_bg">@drawable/bg_install_vkme_vkapp</item>
@@ -183,7 +182,6 @@
 
     <style name="Vk.Theme.VkMe" parent="@style/Vk.Theme">
         <item name="android:windowLayoutInDisplayCutoutMode">default</item>
-        <item name="im_ic_add_circle">@drawable/ic_add_circle_outline_28</item>
         <item name="im_avatars_combine">false</item>
         <item name="im_bg_sticky_date">@drawable/bg_sticky_date</item>
         <item name="im_button_all_caps">false</item>

smali/res/values/attrs.xml

@@ -803,7 +803,6 @@
     <attr name="id_image" format="reference" />
     <attr name="id_time" format="reference" />
     <attr name="ignore_tint" format="boolean" />
-    <attr name="im_ic_add_circle" format="reference" />
     <attr name="im_app_swipe_background_end" format="color" />
     <attr name="im_app_swipe_background_start" format="color" />
     <attr name="im_attach_tint" format="reference|color" />