Revert "Fix build due to phasing off SecurityManager usage in favor of Java Agent (opensearch-project#1504)"

This reverts commit d6ddd5b.

Signed-off-by: Pranav Reddy <pranavrd@amazon.com>

Author: pranu2502

build.gradle

@@ -138,26 +138,6 @@ allprojects {
         targetCompatibility = JavaVersion.VERSION_21
         sourceCompatibility = JavaVersion.VERSION_21
     }
-
-    configurations {
-        agent
-    }
-
-    task prepareAgent(type: Copy) {
-        from(configurations.agent)
-        into "$buildDir/agent"
-    }
-
-    dependencies {
-        agent "org.opensearch:opensearch-agent-bootstrap:${opensearch_version}"
-        agent "org.opensearch:opensearch-agent:${opensearch_version}"
-        agent "net.bytebuddy:byte-buddy:${versions.bytebuddy}"
-    }
-
-    tasks.withType(Test) {
-        dependsOn prepareAgent
-        jvmArgs += ["-javaagent:" + project.layout.buildDirectory.file("agent/opensearch-agent-${opensearch_version}.jar").get()]
-    }
 }
 
 publishing {