Drop deprecated SplitWindow configuration settings

These were first marked as deprecated in 2002:
https://cgit.freedesktop.org/libreoffice/core/commit/officecfg/registry/schema/org/openoffice/Office/Common.xcs?id=4c25e5b66af5afa507c63947356c4720910a2ad6

Change-Id: I6fb8b48b44d71b85d2cd3406a730f650981b8147
Reviewed-on: https://gerrit.libreoffice.org/40905Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Miklos Vajna <vmiklos@collabora.co.uk>

officecfg/registry/schema/org/openoffice/Office/Common.xcs

@@ -2953,82 +2953,6 @@
                NIL was intended -->
         </prop>
       </group>
-      <group oor:name="SplitWindow">
-        <info>
-          <deprecated/>
-          <desc>Specifies the properties of window containers for docked
-          windows.</desc>
-        </info>
-        <prop oor:name="Key" oor:type="xs:string" oor:nillable="false">
-          <!-- OldPath: soffice_View/SplitWindow -->
-          <!-- OldLocation: soffice.ini -->
-          <!-- Notice: LM: Description is missing 0SplitWindow=V1,2,1,0,6308 -->
-          <info>
-            <deprecated/>
-            <desc>Deprecated.</desc>
-          </info>
-          <value/>
-          <!-- JB: Empty default inserted into empty property node. Remove if
-               NIL was intended -->
-        </prop>
-        <prop oor:name="Version" oor:type="xs:int">
-          <!-- OldPath: soffice_View/SplitWindow -->
-          <!-- OldLocation: soffice.ini -->
-          <!-- Notice: LM: Description is missing -->
-          <info>
-            <deprecated/>
-            <desc>Deprecated.</desc>
-          </info>
-        </prop>
-        <prop oor:name="State" oor:type="xs:int">
-          <!-- OldPath: soffice_View/SplitWindow -->
-          <!-- OldLocation: soffice.ini -->
-          <info>
-            <deprecated/>
-            <desc>Deprecated.</desc>
-          </info>
-          <constraints>
-            <enumeration oor:value="0">
-              <info>
-                <desc>Stick/Hidden</desc>
-              </info>
-            </enumeration>
-            <enumeration oor:value="1">
-              <info>
-                <desc>Floating/Hidden</desc>
-              </info>
-            </enumeration>
-            <enumeration oor:value="2">
-              <info>
-                <desc>Stick/Visible</desc>
-              </info>
-            </enumeration>
-            <enumeration oor:value="3">
-              <info>
-                <desc>Floating/Visible</desc>
-              </info>
-            </enumeration>
-          </constraints>
-        </prop>
-        <prop oor:name="Count" oor:type="xs:int">
-          <info>
-            <deprecated/>
-            <desc>Deprecated.</desc>
-          </info>
-          <!-- OldPath: soffice_View/SplitWindow -->
-          <!-- OldLocation: soffice.ini -->
-          <!-- Notice: LM: Description is missing -->
-        </prop>
-        <prop oor:name="Sequence" oor:type="xs:int">
-          <info>
-            <deprecated/>
-            <desc>Deprecated.</desc>
-          </info>
-          <!-- OldPath: soffice_View/SplitWindow -->
-          <!-- OldLocation: soffice.ini -->
-          <!-- Notice: LM: Description is missing -->
-        </prop>
-      </group>
       <group oor:name="FontAntiAliasing">
         <info>
           <desc>Font antialiasing properties</desc>