Remove beta1 qualifier (opensearch-project#3794)

Signed-off-by: Peter Zhu <[email protected]>

Author: peterzhuamazon

build.gradle

@@ -12,7 +12,7 @@ buildscript {
         opensearch_group = "org.opensearch"
         isSnapshot = "true" == System.getProperty("build.snapshot", "true")
         opensearch_version = System.getProperty("opensearch.version", "3.0.0-SNAPSHOT")
-        buildVersionQualifier = System.getProperty("build.version_qualifier", "beta1")
+        buildVersionQualifier = System.getProperty("build.version_qualifier", "")
         asm_version = "9.7"
 
         // 2.0.0-rc1-SNAPSHOT -> 2.0.0.0-rc1-SNAPSHOT