Remove copy-paste from spring and trace instrumentation

Author: Andrew Kent

dd-java-agent/instrumentation/spring-web/src/main/java/datadog/trace/instrumentation/springweb/SpringWebInstrumentation.java

@@ -16,19 +16,13 @@
 import datadog.trace.api.DDTags;
 import io.opentracing.Scope;
 import io.opentracing.util.GlobalTracer;
-import java.sql.PreparedStatement;
-import java.util.Collections;
-import java.util.Map;
-import java.util.WeakHashMap;
 import javax.servlet.http.HttpServletRequest;
 import net.bytebuddy.agent.builder.AgentBuilder;
 import net.bytebuddy.asm.Advice;
 import org.springframework.web.servlet.HandlerMapping;
 
 @AutoService(Instrumenter.class)
 public final class SpringWebInstrumentation implements Instrumenter {
-  public static final Map<PreparedStatement, String> preparedStatements =
-      Collections.synchronizedMap(new WeakHashMap<PreparedStatement, String>());
 
   @Override
   public AgentBuilder instrument(final AgentBuilder agentBuilder) {

dd-java-agent/instrumentation/trace-annotation/src/main/java/datadog/trace/instrumentation/trace_annotation/TraceAnnotationInstrumentation.java

@@ -13,17 +13,12 @@
 import io.opentracing.tag.Tags;
 import io.opentracing.util.GlobalTracer;
 import java.lang.reflect.Method;
-import java.sql.PreparedStatement;
 import java.util.Collections;
-import java.util.Map;
-import java.util.WeakHashMap;
 import net.bytebuddy.agent.builder.AgentBuilder;
 import net.bytebuddy.asm.Advice;
 
 @AutoService(Instrumenter.class)
 public final class TraceAnnotationInstrumentation implements Instrumenter {
-  public static final Map<PreparedStatement, String> preparedStatements =
-      Collections.synchronizedMap(new WeakHashMap<PreparedStatement, String>());
 
   @Override
   public AgentBuilder instrument(final AgentBuilder agentBuilder) {