too many Inits

so double acquire called, leak, keeps listening after
expected death, loads and loads of crashes in draw with
a11y enabled and slide switching with tables in them.

regression since 60f11adb

Change-Id: I182b43ad4a002a8dff0683cd1e991cfd1de75eb6

svx/source/table/accessibletableshape.cxx

@@ -176,8 +176,6 @@ Reference< XAccessible > AccessibleTableShapeImpl::getAccessibleChild( sal_Int32
         xAccessibleCell->Init();
         maChildMap[xCell] = xAccessibleCell;
 
-        xAccessibleCell->Init();
-
         Reference< XAccessible > xChild( xAccessibleCell.get() );
         return xChild;
     }