Remove test that relied on JWT feature flag

The testJwtRealmDependsOnBuildType test assumed that JWT was behind a
feature flag which is no longer the case

Resolves: elastic#85407

x-pack/plugin/security/src/test/java/org/elasticsearch/xpack/security/authc/InternalRealmsTests.java

@@ -6,7 +6,6 @@
  */
 package org.elasticsearch.xpack.security.authc;
 
-import org.elasticsearch.Build;
 import org.elasticsearch.common.settings.Settings;
 import org.elasticsearch.common.util.concurrent.ThreadContext;
 import org.elasticsearch.env.Environment;
@@ -21,7 +20,6 @@
 import org.elasticsearch.xpack.core.security.authc.RealmConfig;
 import org.elasticsearch.xpack.core.security.authc.RealmSettings;
 import org.elasticsearch.xpack.core.security.authc.esnative.NativeRealmSettings;
-import org.elasticsearch.xpack.core.security.authc.jwt.JwtRealmSettings;
 import org.elasticsearch.xpack.core.security.authc.ldap.LdapRealmSettings;
 import org.elasticsearch.xpack.core.security.authc.pki.PkiRealmSettings;
 import org.elasticsearch.xpack.core.ssl.SSLService;
@@ -109,16 +107,6 @@ public void testEachRealmHasRegisteredOrderSetting() {
         assertThat(registeredOrderKeys, Matchers.equalTo(configurableOrderKeys));
     }
 
-    @AwaitsFix(bugUrl = "https://github.com/elastic/elasticsearch/issues/85407")
-    public void testJwtRealmDependsOnBuildType() {
-        // Whether the JWT realm is registered depends on the build type
-        if (Build.CURRENT.isSnapshot()) {
-            assertThat(InternalRealms.isInternalRealm(JwtRealmSettings.TYPE), is(true));
-        } else {
-            assertThat(InternalRealms.isInternalRealm(JwtRealmSettings.TYPE), is(false));
-        }
-    }
-
     private boolean isStandardRealm(String type) {
         return switch (type) {
             case LdapRealmSettings.LDAP_TYPE, LdapRealmSettings.AD_TYPE, PkiRealmSettings.TYPE -> true;