remove unused imports

Author: jhrotko

vector/src/main/java/org/apache/arrow/vector/complex/impl/AbstractExtensionTypeWriter.java

@@ -17,8 +17,6 @@
 package org.apache.arrow.vector.complex.impl;
 
 import org.apache.arrow.vector.ExtensionTypeVector;
-import org.apache.arrow.vector.ValueVector;
-import org.apache.arrow.vector.complex.writer.FieldWriter;
 import org.apache.arrow.vector.types.pojo.Field;
 
 /**

vector/src/main/java/org/apache/arrow/vector/complex/impl/UuidReaderImpl.java

@@ -61,6 +61,7 @@ public boolean isSet() {
     return !vector.isNull(idx());
   }
 
+  @Override
   public void read(ExtensionHolder holder) {
     if (holder instanceof UuidHolder) {
       vector.get(idx(), (UuidHolder) holder);

vector/src/main/java/org/apache/arrow/vector/complex/impl/UuidWriterImpl.java

@@ -18,8 +18,6 @@
 
 import org.apache.arrow.memory.ArrowBuf;
 import org.apache.arrow.vector.UuidVector;
-import org.apache.arrow.vector.ValueVector;
-import org.apache.arrow.vector.complex.writer.FieldWriter;
 import org.apache.arrow.vector.holders.ExtensionHolder;
 import org.apache.arrow.vector.holders.NullableUuidHolder;
 import org.apache.arrow.vector.holders.UuidHolder;