Unmute TimeSeriesSourceOperatorTests.testSliceIndex (#135023)

Fixed in #134826

Author: kkrik-es

muted-tests.yml

@@ -540,9 +540,6 @@ tests:
 - class: org.elasticsearch.discovery.DiscoveryDisruptionIT
   method: testElectMasterWithLatestVersion
   issue: https://github.com/elastic/elasticsearch/issues/134748
-- class: org.elasticsearch.compute.lucene.TimeSeriesSourceOperatorTests
-  method: testSliceIndex
-  issue: https://github.com/elastic/elasticsearch/issues/134808
 - class: org.elasticsearch.xpack.esql.ccq.MultiClusterSpecIT
   method: test {csv-spec:fork.ForkBeforeStatsByWithWhere}
   issue: https://github.com/elastic/elasticsearch/issues/134817