Remove unused AgentScope.Continuation.span() method (#12002)

Remove unused AgentScope.Continuation.span() method

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

Co-authored-by: devflow.devflow-routing-intake <devflow.devflow-routing-intake@kubernetes.us1.ddbuild.io>

Author: mcculls

dd-trace-core/src/main/java/datadog/trace/core/scopemanager/ScopeContinuation.java

@@ -5,7 +5,6 @@
 import datadog.context.Context;
 import datadog.context.ContextScope;
 import datadog.trace.bootstrap.instrumentation.api.AgentScope;
-import datadog.trace.bootstrap.instrumentation.api.AgentSpan;
 import datadog.trace.bootstrap.instrumentation.api.AgentTraceCollector;
 import java.util.concurrent.atomic.AtomicIntegerFieldUpdater;
 
@@ -129,11 +128,6 @@ public AgentScope activate() {
     return (AgentScope) resume();
   }
 
-  @Override
-  public AgentSpan span() {
-    return AgentSpan.fromContext(context);
-  }
-
   @Override
   public void cancel() {
     release();

internal-api/src/main/java/datadog/trace/bootstrap/instrumentation/api/AgentScope.java

@@ -24,8 +24,5 @@ interface Continuation extends TraceScope.Continuation, ContextContinuation {
 
     @Override
     AgentScope activate();
-
-    /** Provide access to the captured span */
-    AgentSpan span();
   }
 }

internal-api/src/main/java/datadog/trace/bootstrap/instrumentation/api/NoopContinuation.java

@@ -32,11 +32,6 @@ public AgentScope activate() {
     return NoopScope.INSTANCE;
   }
 
-  @Override
-  public AgentSpan span() {
-    return NoopSpan.INSTANCE;
-  }
-
   @Override
   public void cancel() {}
 }