ES|QL: unmute GenerativeIT (#134285)

Author: luigidellaquila

muted-tests.yml

@@ -483,9 +483,6 @@ tests:
 - class: org.elasticsearch.xpack.esql.inference.rerank.RerankOperatorTests
   method: testSimpleCircuitBreaking
   issue: https://github.com/elastic/elasticsearch/issues/133619
-- class: org.elasticsearch.xpack.esql.qa.single_node.GenerativeIT
-  method: test
-  issue: https://github.com/elastic/elasticsearch/issues/133077
 - class: org.elasticsearch.xpack.kql.parser.KqlParserBooleanQueryTests
   method: testParseOrQuery
   issue: https://github.com/elastic/elasticsearch/issues/133863