Fix style issue

Author: horakivo

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/nodes/arrow/vector/VectorToArrowArrayNode.java

@@ -42,7 +42,6 @@
 
 import com.oracle.graal.python.nodes.PNodeWithContext;
 import com.oracle.graal.python.nodes.arrow.ArrowArray;
-import com.oracle.graal.python.runtime.arrow.ArrowVectorSupport;
 import com.oracle.graal.python.runtime.PythonContext;
 import com.oracle.truffle.api.CompilerDirectives;
 import com.oracle.truffle.api.dsl.Bind;
@@ -73,7 +72,8 @@ static ArrowArray doIntVector(Node inliningTarget, Object vector,
             snapshot.null_count = (Integer) interopLib.invokeMember(vector, "getNullCount");
             snapshot.n_buffers = (Integer) interopLib.invokeMember(vector, "getExportedCDataBufferCount");
             if (snapshot.n_buffers != 2) {
-                throw CompilerDirectives.shouldNotReachHere("We expect that Vector implementation to has just 2 buffers, those are validity buffer and value buffer. This should never happen unless arrow changes internally");
+                throw CompilerDirectives.shouldNotReachHere(
+                                "We expect that Vector implementation to has just 2 buffers, those are validity buffer and value buffer. This should never happen unless arrow changes internally");
             }
             snapshot.buffers = unsafe.allocateMemory(2 * POINTER_SIZE);
             long validityPointer = (long) interopLib.invokeMember(vector, "getValidityBufferAddress");

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/runtime/arrow/ArrowSupport.java

@@ -43,19 +43,15 @@
 import com.oracle.graal.python.nodes.arrow.capsule.ArrowArrayCapsuleDestructor;
 import com.oracle.graal.python.nodes.arrow.capsule.ArrowSchemaCapsuleDestructor;
 import com.oracle.graal.python.nodes.arrow.release_callback.ArrowSchemaReleaseCallback;
-import com.oracle.graal.python.nodes.arrow.vector.VectorArrowArrayReleaseCallback;
 import com.oracle.graal.python.runtime.PythonContext;
 import com.oracle.graal.python.util.PythonUtils;
 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.interop.InteropLibrary;
-import com.oracle.truffle.api.source.Source;
 import com.oracle.truffle.nfi.api.SignatureLibrary;
 
-import static com.oracle.graal.python.nodes.StringLiterals.J_NFI_LANGUAGE;
-
 public class ArrowSupport {
 
     protected final PythonContext ctx;