Removed unused classes and interfaces . (#1612)

Author: JanKallman

src/EPPlus/FormulaParsing/Excel/Functions/BuiltInFunctions.cs

@@ -261,8 +261,8 @@ public BuiltInFunctions()
             Functions["expondist"] = new Expondist();
             Functions["expon.dist"] = new ExponDotDist();
             Functions["steyx"] = new Steyx();
-            Functions["t.dist"] = new TDist();
-            Functions["tdist"] = new TDotDist();
+            Functions["t.dist"] = new TDotDist();
+            Functions["tdist"] = new TDist();
             Functions["t.dist.2t"] = new TDist2t();
             Functions["t.inv"] = new TInv();
             Functions["t.dist.rt"] = new TDistRt();

src/EPPlus/FormulaParsing/IParsingLifetimeEventHandler.cs

@@ -25,7 +25,7 @@ namespace OfficeOpenXml.FormulaParsing
     /// <summary>
     /// Parsing context
     /// </summary>
-    public class ParsingContext : IParsingLifetimeEventHandler
+    public class ParsingContext 
     {
         private ParsingContext(ExcelPackage package) {
             SubtotalAddresses = new HashSet<ulong>();
@@ -76,18 +76,6 @@ internal HiddenCellHandlingCategory HiddenCellBehaviour
         /// Configuration
         /// </summary>
         public ParsingConfiguration Configuration { get; set; }
-
-        ///// <summary>
-        ///// Scopes, a scope represents the parsing of a cell or a value.
-        ///// </summary>
-        //public ParsingScopes Scopes { get; private set; }
-
-        ///// <summary>
-        ///// Address cache
-        ///// </summary>
-        ///// <seealso cref="ExcelAddressCache"/>
-        //public ExcelAddressCache AddressCache { get; private set; }
-
         /// <summary>
         /// Returns true if a <see cref="IFormulaParserLogger"/> is attached to the parser.
         /// </summary>
@@ -121,12 +109,6 @@ public static ParsingContext Create()
             return Create(null);
         }
 
-        void IParsingLifetimeEventHandler.ParsingCompleted()
-        {
-            //AddressCache.Clear();
-           // SubtotalAddresses.Clear();
-        }
-
         internal int GetWorksheetIndex(string wsName)
         {
             if(string.IsNullOrEmpty(wsName))