[ML] Unmute fixed Classification IT tests #122352

Unmute tests following #122268

Closes #120071
Closes #121680
Closes #121492
Closes #121415
Closes #121236

Author: valeriy42

muted-tests.yml

@@ -254,9 +254,6 @@ tests:
 - class: org.elasticsearch.xpack.security.FileSettingsRoleMappingsRestartIT
   method: testFileSettingsReprocessedOnRestartWithoutVersionChange
   issue: https://github.com/elastic/elasticsearch/issues/120964
-- class: org.elasticsearch.xpack.ml.integration.ClassificationIT
-  method: testWithOnlyTrainingRowsAndTrainingPercentIsFifty_DependentVariableIsKeyword
-  issue: https://github.com/elastic/elasticsearch/issues/120071
 - class: org.elasticsearch.xpack.security.profile.ProfileIntegTests
   method: testGetUsersWithProfileUidWhenProfileIndexDoesNotExists
   issue: https://github.com/elastic/elasticsearch/issues/121179
@@ -265,9 +262,6 @@ tests:
 - class: org.elasticsearch.xpack.security.profile.ProfileIntegTests
   method: testSetEnabled
   issue: https://github.com/elastic/elasticsearch/issues/121183
-- class: org.elasticsearch.xpack.ml.integration.ClassificationIT
-  method: testWithDatastreams
-  issue: https://github.com/elastic/elasticsearch/issues/121236
 - class: org.elasticsearch.xpack.test.rest.XPackRestIT
   method: test {p0=transform/*}
   issue: https://github.com/elastic/elasticsearch/issues/120816
@@ -317,9 +311,6 @@ tests:
   issue: https://github.com/elastic/elasticsearch/issues/121151
 - class: org.elasticsearch.test.rest.yaml.CcsCommonYamlTestSuiteIT
   issue: https://github.com/elastic/elasticsearch/issues/121407
-- class: org.elasticsearch.xpack.ml.integration.ClassificationIT
-  method: testDependentVariableIsAliasToNested
-  issue: https://github.com/elastic/elasticsearch/issues/121415
 - class: org.elasticsearch.xpack.security.authc.jwt.JwtRealmSingleNodeTests
   method: testClientSecretRotation
   issue: https://github.com/elastic/elasticsearch/issues/120985
@@ -347,9 +338,6 @@ tests:
 - class: org.elasticsearch.backwards.MixedClusterClientYamlTestSuiteIT
   method: test {p0=search.vectors/42_knn_search_int4_flat/Vector similarity with filter only}
   issue: https://github.com/elastic/elasticsearch/issues/121412
-- class: org.elasticsearch.xpack.ml.integration.ClassificationIT
-  method: testDependentVariableIsAliasToKeyword
-  issue: https://github.com/elastic/elasticsearch/issues/121492
 - class: org.elasticsearch.search.CrossClusterSearchUnavailableClusterIT
   method: testSearchSkipUnavailable
   issue: https://github.com/elastic/elasticsearch/issues/121497
@@ -372,9 +360,6 @@ tests:
 - class: org.elasticsearch.test.rest.ClientYamlTestSuiteIT
   method: test {yaml=snapshot.delete/10_basic/Delete a snapshot asynchronously}
   issue: https://github.com/elastic/elasticsearch/issues/122102
-- class: org.elasticsearch.xpack.ml.integration.ClassificationIT
-  method: testWithOnlyTrainingRowsAndTrainingPercentIsFifty_DependentVariableIsBoolean
-  issue: https://github.com/elastic/elasticsearch/issues/121680
 - class: org.elasticsearch.xpack.downsample.DownsampleActionSingleNodeTests
   method: testDuplicateDownsampleRequest
   issue: https://github.com/elastic/elasticsearch/issues/122158