Fix style.

Author: fangerer

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/modules/ExternalFunctionNodes.java

@@ -402,6 +402,7 @@ public Object execute(VirtualFrame frame) {
 
         protected abstract Object[] prepareCArguments(VirtualFrame frame);
 
+        @SuppressWarnings("unused")
         protected void postprocessCArguments(VirtualFrame frame, Object[] cArguments) {
             // default: do nothing
         }
@@ -491,6 +492,7 @@ protected Object[] prepareCArguments(VirtualFrame frame) {
             return new Object[]{self, createArgsTupleNode.execute(factory, args), factory.createDict(kwargs)};
         }
 
+        @Override
         protected void postprocessCArguments(VirtualFrame frame, Object[] cArguments) {
             PTuple varargsTuple = (PTuple) cArguments[1];
             ensureReleaseNativeWrapperNode().execute(varargsTuple, varargsTuple.getNativeWrapper());
@@ -535,6 +537,7 @@ protected Object[] prepareCArguments(VirtualFrame frame) {
             return new Object[]{self, createArgsTupleNode.execute(factory, args)};
         }
 
+        @Override
         protected void postprocessCArguments(VirtualFrame frame, Object[] cArguments) {
             PTuple varargsTuple = (PTuple) cArguments[1];
             ensureReleaseNativeWrapperNode().execute(varargsTuple, varargsTuple.getNativeWrapper());

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/objects/PythonAbstractObject.java

@@ -135,7 +135,6 @@
 import com.oracle.graal.python.runtime.PythonOptions;
 import com.oracle.graal.python.runtime.exception.PException;
 import com.oracle.graal.python.util.OverflowException;
-import com.oracle.truffle.api.Assumption;
 import com.oracle.truffle.api.CompilerDirectives;
 import com.oracle.truffle.api.CompilerDirectives.TruffleBoundary;
 import com.oracle.truffle.api.TruffleLanguage;

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/objects/cext/CExtNodes.java

@@ -139,7 +139,6 @@
 import com.oracle.truffle.api.CompilerAsserts;
 import com.oracle.truffle.api.CompilerDirectives;
 import com.oracle.truffle.api.CompilerDirectives.CompilationFinal;
-import com.oracle.truffle.api.CompilerDirectives.TruffleBoundary;
 import com.oracle.truffle.api.TruffleLanguage.ContextReference;
 import com.oracle.truffle.api.TruffleLogger;
 import com.oracle.truffle.api.dsl.Cached;