Bin a pointless and annoying OSL_ENSURE

If somebody wants it back, please revert, but then also add a comment telling
what it means.

Change-Id: I40bae1b6747c8fa21f3bf4b3fc6f839226951a12

sfx2/source/doc/objstor.cxx

@@ -1799,8 +1799,6 @@ sal_Bool SfxObjectShell::DisconnectStorage_Impl( SfxMedium& rSrcMedium, SfxMediu
         {}
     }
 
-    OSL_ENSURE( bResult, "Storage disconnecting has failed - affects performance!" );
-
     return bResult;
 }