Delete dead code resulting from 20c11b4

Missed a comment in PR microsoft#16183

Author: amcasey

Jakefile.js

@@ -268,7 +268,6 @@ var builtLocalCompiler = path.join(builtLocalDirectory, compilerFilename);
     * @param {boolean} opts.preserveConstEnums: true if compiler should keep const enums in code
     * @param {boolean} opts.noResolve: true if compiler should not include non-rooted files in compilation
     * @param {boolean} opts.stripInternal: true if compiler should remove declarations marked as @internal
-    * @param {boolean} opts.noMapRoot: true if compiler omit mapRoot option
     * @param {boolean} opts.inlineSourceMap: true if compiler should inline sourceMap
     * @param {Array} opts.types: array of types to include in compilation
     * @param callback: a function to execute after the compilation process ends
@@ -524,7 +523,7 @@ task("importDefinitelyTypedTests", [importDefinitelyTypedTestsJs], function () {
 
 // Local target to build the compiler and services
 var tscFile = path.join(builtLocalDirectory, compilerFilename);
-compileFile(tscFile, compilerSources, [builtLocalDirectory, copyright].concat(compilerSources), [copyright], /*useBuiltCompiler:*/ false, { noMapRoot: true });
+compileFile(tscFile, compilerSources, [builtLocalDirectory, copyright].concat(compilerSources), [copyright], /*useBuiltCompiler:*/ false);
 
 var servicesFile = path.join(builtLocalDirectory, "typescriptServices.js");
 var servicesFileInBrowserTest = path.join(builtLocalDirectory, "typescriptServicesInBrowserTest.js");
@@ -579,7 +578,6 @@ compileFile(
         keepComments: true,
         noResolve: false,
         stripInternal: true,
-        noMapRoot: true,
         inlineSourceMap: true
     });