diff --git a/static/js/directives/odfcanvas.js b/static/js/directives/odfcanvas.js
index 5237a32c..826cc6e0 100644
--- a/static/js/directives/odfcanvas.js
+++ b/static/js/directives/odfcanvas.js
@@ -38,22 +38,6 @@ define(['require', 'underscore', 'jquery'], function(require, _, $) {
 			return ns[prefix] || console.log('prefix [' + prefix + '] unknown.');
 		}
 
-		var ODFCanvas_read = function(path, offset, length, callback) {
-			if (typeof path === "string") {
-				webodf.runtime.orig_read.call(webodf.runtime, path, offset, length, callback);
-				return;
-			}
-
-			var fp = path.file || path;
-			if (typeof URL !== "undefined" && URL.createObjectURL) {
-				var url = URL.createObjectURL(fp);
-				webodf.runtime.orig_read.call(webodf.runtime, url, offset, length, callback);
-				return;
-			}
-
-			console.error("TODO(fancycode): implement read for", path);
-		};
-
 		var ODFCanvas_readFile = function(path, encoding, callback) {
 			if (typeof path === "string") {
 				webodf.runtime.orig_readFile.call(webodf.runtime, path, encoding, callback);
@@ -86,22 +70,6 @@ define(['require', 'underscore', 'jquery'], function(require, _, $) {
 			console.error("TODO(fancycode): implement loadXML for", path);
 		};
 
-		var ODFCanvas_getFileSize = function(path, callback) {
-			if (typeof path === "string") {
-				webodf.runtime.orig_getFileSize.call(webodf.runtime, path, callback);
-				return;
-			}
-
-			var size = path.size || path.info.size;
-			if (typeof size !== "undefined") {
-				callback(size);
-				return;
-			}
-
-			console.error("TODO(fancycode): implement getFileSize for", path);
-			callback(-1);
-		};
-
 		var controller = ['$scope', '$element', '$attrs', function($scope, $element, $attrs) {
 
 			var ODFCanvas = function(scope, container, canvasDom) {
@@ -192,14 +160,10 @@ define(['require', 'underscore', 'jquery'], function(require, _, $) {
 						webodf = webodf_;
 
 						// monkey-patch IO functions
-						webodf.runtime.orig_read = webodf.runtime.read;
-						webodf.runtime.read = ODFCanvas_read;
 						webodf.runtime.orig_readFile = webodf.runtime.readFile;
 						webodf.runtime.readFile = ODFCanvas_readFile;
 						webodf.runtime.orig_loadXML = webodf.runtime.loadXML;
 						webodf.runtime.loadXML = ODFCanvas_loadXML;
-						webodf.runtime.orig_getFileSize = webodf.runtime.getFileSize;
-						webodf.runtime.getFileSize = ODFCanvas_getFileSize;
 
 						this.scope.$apply(_.bind(function(scope) {
 							this._doOpenFile(source);