Use standard functional interfaces over Guava

Author: cirras

delphi-frontend/src/main/java/au/com/integradev/delphi/antlr/ast/node/AnonymousMethodNodeImpl.java

@@ -23,10 +23,10 @@
 import au.com.integradev.delphi.cfg.api.ControlFlowGraph;
 import au.com.integradev.delphi.type.factory.TypeFactoryImpl;
 import au.com.integradev.delphi.type.parameter.FormalParameter;
-import com.google.common.base.Supplier;
 import com.google.common.base.Suppliers;
 import java.util.Collections;
 import java.util.Set;
+import java.util.function.Supplier;
 import java.util.stream.Collectors;
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;

delphi-frontend/src/main/java/au/com/integradev/delphi/antlr/ast/node/RoutineImplementationNodeImpl.java

@@ -21,9 +21,9 @@
 import au.com.integradev.delphi.antlr.ast.visitors.DelphiParserVisitor;
 import au.com.integradev.delphi.cfg.ControlFlowGraphFactory;
 import au.com.integradev.delphi.cfg.api.ControlFlowGraph;
-import com.google.common.base.Supplier;
 import com.google.common.base.Suppliers;
 import java.util.function.Function;
+import java.util.function.Supplier;
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
 import org.antlr.runtime.Token;