Remove unused field

Author: darxriggs

src/main/java/com/github/fabienrenaud/jjb/JsonUtils.java

@@ -1,7 +1,5 @@
 package com.github.fabienrenaud.jjb;
 
-import com.dslplatform.json.JsonWriter;
-
 import javax.json.spi.JsonProvider;
 import java.io.ByteArrayOutputStream;
 
@@ -34,7 +32,4 @@ public static StringBuilder stringBuilder() {
     private static final ThreadLocal<ByteArrayOutputStream> THREAD_BYTE_ARRAY_OUTPUT_STREAM = ThreadLocal.withInitial(ByteArrayOutputStream::new);
 
     private static final ThreadLocal<StringBuilder> THREAD_STRING_BUILDER = ThreadLocal.withInitial(StringBuilder::new);
-
-    private static final ThreadLocal<com.dslplatform.json.JsonWriter> THREAD_DSL_WRITER = ThreadLocal.withInitial(JsonWriter::new);
-
 }