CR feedback : remove type annotations for inferred types

Author: basarat

src/compiler/checker.ts

@@ -859,7 +859,7 @@ module ts {
             }
             let fileName: string;
             let sourceFile: SourceFile;
-            let resolvedName: string = host.resolveExternalModule(moduleName, searchPath);
+            let resolvedName = host.resolveExternalModule(moduleName, searchPath);
             if (resolvedName) {
                sourceFile = host.getSourceFile(resolvedName);
             }

src/compiler/program.ts

@@ -484,7 +484,7 @@ module ts {
                     if (moduleNameExpr && moduleNameExpr.kind === SyntaxKind.StringLiteral) {
                         let moduleNameText = (<LiteralExpression>moduleNameExpr).text;
                         if (moduleNameText) {
-                            let resolvedName: string = resolveExternalModule(moduleNameText, getDirectoryPath(file.fileName));
+                            let resolvedName = resolveExternalModule(moduleNameText, getDirectoryPath(file.fileName));
                             if (resolvedName) {
                                 findModuleSourceFile(resolvedName, moduleNameExpr);
                             }