[ML] Unmute fixed DFA IT tests (elastic#126408)

Author: valeriy42

muted-tests.yml

@@ -348,18 +348,12 @@ tests:
 - class: org.elasticsearch.search.basic.SearchWithRandomIOExceptionsIT
   method: testRandomDirectoryIOExceptions
   issue: https://github.com/elastic/elasticsearch/issues/118733
-- class: org.elasticsearch.xpack.ml.integration.ClassificationIT
-  method: testSetUpgradeMode_ExistingTaskGetsUnassigned
-  issue: https://github.com/elastic/elasticsearch/issues/122692
 - class: org.elasticsearch.gradle.internal.InternalDistributionBwcSetupPluginFuncTest
   method: supports linux aarch distributions
   issue: https://github.com/elastic/elasticsearch/issues/119868
 - class: org.elasticsearch.gradle.internal.InternalDistributionBwcSetupPluginFuncTest
   method: bwc expanded distribution folder can be resolved as bwc project artifact
   issue: https://github.com/elastic/elasticsearch/issues/119869
-- class: org.elasticsearch.xpack.ml.integration.ClassificationIT
-  method: testWithOnlyTrainingRowsAndTrainingPercentIsHundred
-  issue: https://github.com/elastic/elasticsearch/issues/123844
 
 # Examples:
 #
@@ -398,4 +392,4 @@ tests:
 #    issue: "https://github.com/elastic/elasticsearch/..."
 #  - class: "org.elasticsearch.xpack.esql.**"
 #    method: "test {union_types.MultiIndexIpStringStatsInline *}"
-#    issue: "https://github.com/elastic/elasticsearch/..."
+#    issue: "https://github.com/elastic/elasticsearch/..."