minor: remove unnecessary null checks in instanceof

Author: Bananeweizen

net.sf.eclipsecs.ui/src/net/sf/eclipsecs/ui/properties/CheckConfigurationContentProvider.java

@@ -50,7 +50,7 @@ public Object[] getElements(Object inputElement) {
 
     List<ICheckConfiguration> configurations = new ArrayList<>();
 
-    if (inputElement != null && inputElement instanceof ProjectConfigurationWorkingCopy) {
+    if (inputElement instanceof ProjectConfigurationWorkingCopy) {
       ICheckConfiguration[] localConfigs = ((ProjectConfigurationWorkingCopy) inputElement)
               .getLocalCheckConfigWorkingSet().getWorkingCopies();
 

net.sf.eclipsecs.ui/src/net/sf/eclipsecs/ui/properties/filter/CheckFileOnOpenPartListener.java

@@ -230,7 +230,7 @@ private IFile getEditorFile(IWorkbenchPartReference partRef) {
 
     IEditorInput input = null;
 
-    if (part != null && part instanceof IEditorPart) {
+    if (part instanceof IEditorPart) {
 
       IEditorPart editor = (IEditorPart) part;
       input = editor.getEditorInput();