Remove duplicated ES 1.7.6 version from test suites (opensearch-project#1750)

Signed-off-by: Jugal Chauhan <[email protected]>

Author: jugal-chauhan

RFS/src/testFixtures/java/org/opensearch/migrations/bulkload/SupportedClusters.java

@@ -61,8 +61,7 @@ public static List<ContainerVersion> extendedSources() {
                 SearchClusterContainer.ES_V2_1,
                 SearchClusterContainer.ES_V2_0,
                 SearchClusterContainer.ES_V1_6,
-                SearchClusterContainer.ES_V1_5,
-                SearchClusterContainer.ES_V1_0
+                SearchClusterContainer.ES_V1_5
         );
     }
 

RFS/src/testFixtures/java/org/opensearch/migrations/bulkload/framework/SearchClusterContainer.java

@@ -115,7 +115,6 @@ private static Map<String, String> overrideAndRemoveEnv(
     public static final ContainerVersion ES_V1_7_6 = OlderElasticsearchVersion.fromTag("1.7.6");
     public static final ContainerVersion ES_V1_6 = OlderElasticsearchVersion.fromTag("1.6.2");
     public static final ContainerVersion ES_V1_5 = OlderElasticsearchVersion.fromTag("1.5.2");
-    public static final ContainerVersion ES_V1_0 = OlderElasticsearchVersion.fromTag("1");
 
     public static final ContainerVersion OS_V1_3_16 = OpenSearchVersion.fromTag("1.3.16");
     public static final ContainerVersion OS_V2_19_1 = OpenSearchVersion.fromTag("2.19.1");