refactor(datasync): remove deprecated SyncMode and SyncModeConfig

- Delete SyncMode.cs enum file
- Remove SyncModes property from PipelineConfig
- Remove SyncModeConfig and DestinationOverride records
- Remove WithMode(SyncMode) from IEtlPipelineBuilder
- Remove BuildWithSyncModes() and related methods from EtlPipelineFactory
- Remove syncModes sections from all pipelines in pipelines.json
- Update tests to use schedules-only configuration

All pipelines now require 'schedules' format (mass/daily/hourly).
WithUpdateType(UpdateTypes) is the only way to set update type.

NEW/src/JdeScoping.DataSync/Configuration/PipelineConfig.cs

@@ -5,8 +5,6 @@ namespace JdeScoping.DataSync.Configuration;
 /// </summary>
 public record PipelineConfig(
     SourceConfig Source,
-    [property: Obsolete("Use Schedules property instead. SyncModes will be removed in a future version.")]
-    Dictionary<string, SyncModeConfig>? SyncModes,
     PipelineSchedules? Schedules,
     List<TransformerConfig>? Transformers,
     DestinationConfig Destination,
@@ -25,22 +23,6 @@ public record ParameterConfig(
     string Source = "offset",
     string? Value = null);
 
-/// <summary>
-/// Sync mode configuration (legacy format).
-/// </summary>
-[Obsolete("Use ScheduleConfig instead. SyncModeConfig will be removed in a future version.")]
-public record SyncModeConfig(
-    string? MinDtOffset,
-    bool PrePurge = false,
-    bool ReIndex = false,
-    string? UpdateWhen = null,
-    DestinationOverride? Destination = null);
-
-public record DestinationOverride(
-    string? Type,
-    List<string>? MatchColumns,
-    List<string>? ExcludeFromUpdate);
-
 public record TransformerConfig(
     string Type,
     List<string>? Columns,