Remove redundant null check.

Author: lukeina2z

instrumentation/aws-sdk/aws-sdk-1.11/library/src/main/java/io/opentelemetry/instrumentation/awssdk/v1_11/RequestAccess.java

@@ -24,18 +24,12 @@ protected RequestAccess computeValue(Class<?> type) {
 
   @Nullable
   static String getStepFunctionsActivityArn(Object request) {
-    if (request == null) {
-      return null;
-    }
     RequestAccess access = REQUEST_ACCESSORS.get(request.getClass());
     return invokeOrNull(access.getStepFunctionsActivityArn, request);
   }
 
   @Nullable
   static String getStateMachineArn(Object request) {
-    if (request == null) {
-      return null;
-    }
     RequestAccess access = REQUEST_ACCESSORS.get(request.getClass());
     return invokeOrNull(access.getStateMachineArn, request);
   }
@@ -72,9 +66,6 @@ static String getTableName(Object request) {
 
   @Nullable
   static String getSnsTopicArn(Object request) {
-    if (request == null) {
-      return null;
-    }
     RequestAccess access = REQUEST_ACCESSORS.get(request.getClass());
     return invokeOrNull(access.getTopicArn, request);
   }