Update matrix.js

matrix.js

@@ -1,9 +1,6 @@
 var canvas = document.querySelector('canvas'),
     ctx    = canvas.getContext('2d');
 
-canvas.width = window.innerWidth;
-canvas.height = window.innerHeight;
-
 var katakana = 'アイウエオカキクケコサシスセソタチツテトナニヌネノハヒフヘホマミムメモヤユヨラリルレロワヲンガギグゲゴザジズゼゾダヂヅデドバビブベボパピプペポヰヱ';
 var hiragana = 'あいうえおかきくけこさしすせそたちつてとなにぬねのはひふへほまみむめもやゆよらりるれろわをんがぎぐげござじずぜぞだぢづでどばびぶべぼぱぴぷぺぽゐゑ';
 var letters = (katakana + hiragana).split("");
@@ -38,4 +35,4 @@ function draw() {
   }
 }
 
-setInterval(draw, 66);
+setInterval(draw, 66);