chore: Remove unused method

Author: HofmeisterAn

src/Testcontainers.Pulsar/PulsarBuilder.cs

@@ -180,31 +180,5 @@ private async Task<bool> UntilAsync(PulsarContainer container)
             return await _httpWaitStrategy.UntilAsync(container)
                 .ConfigureAwait(false);
         }
-
-        /// <summary>
-        /// Determines whether the cluster is healthy or not.
-        /// </summary>
-        /// <param name="response">The HTTP response that contains the cluster information.</param>
-        /// <returns>A value indicating whether the cluster is healthy or not.</returns>
-        private static async Task<bool> IsClusterHealthyAsync(HttpResponseMessage response)
-        {
-            var jsonString = await response.Content.ReadAsStringAsync()
-                .ConfigureAwait(false);
-
-            try
-            {
-                var status = JsonDocument.Parse(jsonString)
-                    .RootElement
-                    .EnumerateArray()
-                    .ElementAt(0)
-                    .GetString();
-
-                return "standalone".Equals(status);
-            }
-            catch
-            {
-                return false;
-            }
-        }
     }
 }