Rewrite some Logger bits, remove last Global throw

SabreTools.Library/Data/Globals.cs

@@ -68,11 +68,6 @@ namespace SabreTools.Library.Data
         /// </summary>
         public static string TempDir { get; set; } = Path.GetTempPath();
 
-        /// <summary>
-        /// Whether to throw an exception from the library if an error is found
-        /// </summary>
-        public static bool ThrowOnError { get; set; } = false;
-
         #endregion
     }
 }