chore: rewrite datetime converter

Author: minhsangdotcom

src/Api/Converters/DateTimeJsonConverter.cs

@@ -17,12 +17,7 @@ JsonSerializerOptions options
         var str = reader.GetString()!;
         try
         {
-            return DateTime.ParseExact(
-                str,
-                IsoUtcFormat,
-                CultureInfo.InvariantCulture,
-                DateTimeStyles.AssumeUniversal | DateTimeStyles.AdjustToUniversal
-            );
+            return DateTime.ParseExact(str, IsoUtcFormat, CultureInfo.InvariantCulture);
         }
         catch (FormatException ex)
         {

src/Api/Converters/DateTimeOffsetJsonConverter.cs

@@ -1,4 +1,3 @@
-using System.Globalization;
 using System.Text.Json;
 using System.Text.Json.Serialization;
 
@@ -31,9 +30,5 @@ public override void Write(
         Utf8JsonWriter writer,
         DateTimeOffset value,
         JsonSerializerOptions options
-    )
-    {
-        var utc = value.ToUniversalTime();
-        writer.WriteStringValue(utc.ToString(IsoUtcFormat, CultureInfo.InvariantCulture));
-    }
+    ) => writer.WriteStringValue(value.ToUniversalTime().ToString(IsoUtcFormat));
 }

src/Api/Extensions/ApiVersioningExtension.cs

@@ -1,5 +1,4 @@
 using Asp.Versioning;
-using Asp.Versioning.Builder;
 
 namespace Api.Extensions;