remove some unnecessary casts

Change-Id: I63b0ce257b40caa53aef337e953ce8d07862d292

nlpsolver/src/com/sun/star/comp/Calc/NLPSolver/DEPSSolverImpl.java

@@ -142,8 +142,7 @@ public final class DEPSSolverImpl extends BaseEvolutionarySolver
             m_agents[i].setGTBehavior(psGTBehavior);
 
             m_agents[i].setSpecComparator(m_specCompareEngine);
-            if (m_agents[i] instanceof ILibEngine)
-                ((ILibEngine)m_agents[i]).setLibrary(m_library);
+            m_agents[i].setLibrary(m_library);
         }
 
         //Learn:

reportbuilder/java/org/libreoffice/report/pentaho/output/spreadsheet/SpreadsheetRawReportTarget.java

@@ -124,8 +124,6 @@ public class SpreadsheetRawReportTarget extends OfficeDocumentReportTarget
             {
                 return 0;
             }
-            if (arg0 instanceof ColumnBoundary)
-            {
             if (boundary > arg0.boundary)
             {
                 return 1;
@@ -135,8 +133,6 @@ public class SpreadsheetRawReportTarget extends OfficeDocumentReportTarget
                 return -1;
             }
         }
-            return 1;
-        }
 
         public boolean equals(final Object obj)
         {

toolkit/test/accessibility/AccessibilityTreeModel.java

@@ -34,8 +34,6 @@ public class AccessibilityTreeModel
     public AccessibilityTreeModel (AccessibleTreeNode aRoot)
     {
         // create default node (unless we have a 'proper' node)
-        if( ! (aRoot instanceof AccessibleTreeNode) )
-            aRoot = new StringNode ("Root", null);
         setRoot (aRoot);
 
         maNodeMap = new NodeMap();