remove skylight progress screen and unused skylight textures

indra/newview/skins/minimal/textures/textures.xml

@@ -1,7 +1,5 @@
 
 <textures version="101">
   <texture name="Button_Separator" file_name="bottomtray/button_separator.png" preload="true" />
-  <texture name="login_teleport_background.jpg" preload="true"/>
   <texture name="arrow_keys.png"/>
-  <texture name="sl_logo.png"/>
 </textures>

indra/newview/skins/minimal/xui/en/main_view.xml

@@ -121,14 +121,7 @@
                     left="0"
                     mouse_opaque="false"
                     name="world_view_rect"
-                    width="500">
-                <icon name="sl_watermark"
-                      image_name="sl_logo.png"
-                      left="5"
-                      top="5"
-                      width="100"
-                      height="45"/>
-              </panel>
+                    width="500"/>
             </layout_panel>
             <layout_panel auto_resize="false"
                    min_height="33"

indra/newview/skins/minimal/xui/en/panel_progress.xml

@@ -1,21 +0,0 @@
-<?xml version="1.0" encoding="utf-8" standalone="yes" ?>
-<panel
- follows="left|bottom|right|top"
- height="768"
- layout="topleft"
- left="0"
- name="login_progress_panel"
- background_visible="true"
- background_opaque="true"
- bg_opaque_image="login_teleport_background.jpg"
- top="768"
- width="1024">
-  <progress_bar
-   bottom="35"
-   color_bar="1 1 1 0.96"
-   height="16"
-   left="220"
-   name="login_progress_bar"
-   follows="left|right|bottom"
-   right="-220" />
-</panel>