chore(application): remove old ISQLExecutor interface location

- Delete ECMJobRunner.Application/Common/Interfaces/ISQLExecutor.cs
- Interface moved to ECMJobRunner.Domain/Interfaces/ (committed in 26ea1db)

ECMJobRunner.Application/Common/Interfaces/ISQLExecutor.cs

@@ -1,20 +0,0 @@
-using System.Threading;
-using System.Threading.Tasks;
-
-namespace ECMJobRunner.Application.Common.Interfaces
-{
-    /// <summary>
-    /// Interface for executing SQL queries and mapping results to DTOs
-    /// </summary>
-    public interface ISQLExecutor
-    {
-        /// <summary>
-        /// Executes a SQL query and maps the result to the specified type
-        /// </summary>
-        /// <typeparam name="TResult">The type to map the query result to</typeparam>
-        /// <param name="sql">The SQL query to execute</param>
-        /// <param name="cancellationToken">Cancellation token</param>
-        /// <returns>The mapped result or null if no result</returns>
-        Task<TResult?> ExecuteQueryAsync<TResult>(string sql, CancellationToken cancellationToken = default);
-    }
-}