Merge pull request #4 from eventualbuddha/remove-unused-ivar

Remove unused instance variables.

src/Bundle.js

@@ -35,7 +35,6 @@ export default class Bundle {
 		this.modulePromises = {};
 		this.statements = [];
 		this.externalModules = [];
-		this.defaultExportName = null;
 		this.internalNamespaceModules = [];
 	}
 

src/Module.js

@@ -19,7 +19,6 @@ export default class Module {
 
 		this.bundle = bundle;
 		this.path = path;
-		this.relativePath = relative( bundle.base, path ).slice( 0, -3 ); // remove .js
 
 		this.magicString = new MagicString( source, {
 			filename: path