Fix sonar issues in RedundantInheritedCheck

This change:
- Removes unnecessary parentheses
- Replaces a lambda with a method reference
- Changed the type of an `int` expression to `long`

Author: jgardn3r

delphi-checks/src/main/java/au/com/integradev/delphi/checks/RedundantInheritedCheck.java

@@ -100,7 +100,7 @@ private static boolean isSemicolon(DelphiNode node) {
   private static DelphiNode getLastStatementToken(
       StatementListNode statementListNode, DelphiNode node) {
     return statementListNode.getChildren().stream()
-        .skip(node.getChildIndex() + 1)
+        .skip(node.getChildIndex() + 1L)
         .takeWhile(RedundantInheritedCheck::isSemicolon)
         .reduce((first, second) -> second)
         .orElse(node);
@@ -124,8 +124,8 @@ private static List<DelphiNode> findViolations(RoutineImplementationNode routine
     }
 
     return statements.stream()
-        .filter((statement) -> statement instanceof ExpressionStatementNode)
-        .map((statement) -> ((ExpressionStatementNode) statement).getExpression())
+        .filter(ExpressionStatementNode.class::isInstance)
+        .map(statement -> ((ExpressionStatementNode) statement).getExpression())
         .filter(ExpressionNodeUtils::isBareInherited)
         .collect(Collectors.toList());
   }