drop iso date format

Author: rcarver

Sources/ElasticsearchQueryBuilder/Encoding.swift

@@ -8,8 +8,6 @@ extension QueryValue: Encodable {
             try container.encode(value)
         case let .date(value, format: format):
             switch format {
-            case .iso8601:
-                try container.encode(value.formatted(.iso8601))
             case .secondsSince1970:
                 try container.encode(String(describing: Int(value.timeIntervalSince1970)))
             case .millisecondsSince1970:

Sources/ElasticsearchQueryBuilder/QueryValue.swift

@@ -12,8 +12,6 @@ public enum QueryValue: Equatable {
 }
 
 public enum QueryDateFormat {
-    /// Encode the `Date` as an ISO-8601-formatted string (in RFC 3339 format).
-    case iso8601
     /// Encode the `Date` as a UNIX timestamp (as a JSON string).
     case secondsSince1970
     /// Encode the `Date` as UNIX millisecond timestamp (as a JSON string).

Tests/ElasticsearchQueryBuilderTests/EncodingTests.swift

@@ -33,21 +33,6 @@ final class EncodingTests: XCTestCase {
 
     let date = Date(timeIntervalSince1970: 1001.12345)
 
-    func test_date_iso8601() throws {
-        try assertFormattedDate(
-            .date(date, format: .iso8601),
-            """
-            "1970-01-01T00:16:41Z"
-            """
-        )
-        try assertFormattedDate(
-            date,
-            dateEncodingStrategy:.iso8601,
-            """
-            "1970-01-01T00:16:41Z"
-            """
-        )
-    }
     func test_date_secondsSince1970() throws {
         try assertFormattedDate(
             .date(date, format: .secondsSince1970),