delete unused code

cell/model/FormulaObjects/_xlfnFunctions.js

@@ -49,7 +49,7 @@
 
 	/*new funcions with _xlnf-prefix*/
 	cFormulaFunctionGroup['DateAndTime'] = cFormulaFunctionGroup['DateAndTime'] || [];
-	cFormulaFunctionGroup['DateAndTime'].push(cDAYS, cISOWEEKNUM);
+	cFormulaFunctionGroup['DateAndTime'].push(cISOWEEKNUM);
 	cFormulaFunctionGroup['TextAndData'] = cFormulaFunctionGroup['TextAndData'] || [];
 	cFormulaFunctionGroup['TextAndData'].push(cDBCS, cUNICHAR, cUNICODE);
 	cFormulaFunctionGroup['Statistical'] = cFormulaFunctionGroup['Statistical'] || [];
@@ -65,7 +65,7 @@
 	cFormulaFunctionGroup['Information'].push(cSHEET, cSHEETS);
 
 	cFormulaFunctionGroup['NotRealised'] = cFormulaFunctionGroup['NotRealised'] || [];
-	cFormulaFunctionGroup['NotRealised'].push(cDAYS, cISOWEEKNUM,
+	cFormulaFunctionGroup['NotRealised'].push(cISOWEEKNUM,
 		cDBCS, cUNICHAR, cUNICODE, cBINOM_DIST_RANGE, cF_TEST, cFORECAST_ETS, cFORECAST_ETS_CONFINT,
 		cFORECAST_ETS_SEASONALITY, cFORECAST_ETS_STAT, cHYPGEOM_DIST, cPDURATION,
 		cAGGREGATE, cMUNIT, cFORMULATEXT, cSHEET, cSHEETS);
@@ -94,30 +94,6 @@
 	cBINOM_DIST_RANGE.prototype = Object.create(cBaseFunction.prototype);
 	cBINOM_DIST_RANGE.prototype.constructor = cBINOM_DIST_RANGE;
 
-	/**
-	 * @constructor
-	 * @extends {AscCommonExcel.cBaseFunction}
-	 */
-	function cCOMBINA() {
-		cBaseFunction.call(this, "COMBINA");
-		this.isXLFN = true;
-	}
-
-	cCOMBINA.prototype = Object.create(cBaseFunction.prototype);
-	cCOMBINA.prototype.constructor = cCOMBINA;
-
-	/**
-	 * @constructor
-	 * @extends {AscCommonExcel.cBaseFunction}
-	 */
-	function cDAYS() {
-		cBaseFunction.call(this, "DAYS");
-		this.isXLFN = true;
-	}
-
-	cDAYS.prototype = Object.create(cBaseFunction.prototype);
-	cDAYS.prototype.constructor = cDAYS;
-
 	/**
 	 * @constructor
 	 * @extends {AscCommonExcel.cBaseFunction}

cell/model/FormulaObjects/dateandtimeFunctions.js

@@ -601,6 +601,7 @@
 	cDAYS.prototype.argumentsMin = 2;
 	cDAYS.prototype.argumentsMax = 2;
 	cDAYS.prototype.numFormat = AscCommonExcel.cNumFormatNone;
+	cDAYS.prototype.isXLFN = true;
 	cDAYS.prototype.Calculate = function (arg) {
 		var oArguments = this._prepareArguments(arg, arguments[1], true);
 		var argClone = oArguments.args;