revert: remove TimeSpan Timeout option

Author: rolodato

Flagsmith.FlagsmithClient/FlagsmithClient.cs

@@ -284,7 +284,7 @@ private async Task<string> GetJson(HttpMethod method, string url, string? body =
                         request.Content = new StringContent(body, Encoding.UTF8, "application/json");
                     }
 
-                    var cancellationTokenSource = new CancellationTokenSource(_config.Timeout);
+                    var cancellationTokenSource = new CancellationTokenSource(TimeSpan.FromSeconds(_config.RequestTimeout ?? 100));
                     HttpResponseMessage response = await _config.HttpClient.SendAsync(request, cancellationTokenSource.Token).ConfigureAwait(false);
                     return response.EnsureSuccessStatusCode();
                 }).ConfigureAwait(false)).Content.ReadAsStringAsync().ConfigureAwait(false);

Flagsmith.FlagsmithClient/FlagsmithConfiguration.cs

@@ -85,14 +85,6 @@ public Double? RequestTimeout
             set => _timeout = TimeSpan.FromSeconds(value ?? 100);
         }
 
-        /// <summary>
-        /// Timeout duration to use for HTTP requests.
-        /// </summary>
-        public TimeSpan Timeout
-        {
-            get => _timeout;
-            set => _timeout = value;
-        }
         /// <summary>
         /// Total http retries for every failing request before throwing the final error.
         /// </summary>