Remove the canvas renderer

Fixes #4779

bin/esbuild.mjs

@@ -133,7 +133,6 @@ if (config.addon) {
       // Library ESM imports
       "@xterm/xterm": ".",
       "@xterm/addon-attach": "./addons/addon-attach/lib/xterm-addon-attach.mjs",
-      "@xterm/addon-canvas": "./addons/addon-canvas/lib/xterm-addon-canvas.mjs",
       "@xterm/addon-clipboard": "./addons/addon-clipboard/lib/xterm-addon-clipboard.mjs",
       "@xterm/addon-fit": "./addons/addon-fit/lib/xterm-addon-fit.mjs",
       "@xterm/addon-image": "./addons/addon-image/lib/xterm-addon-image.mjs",

bin/publish.js

@@ -28,7 +28,6 @@ if (changedFiles.some(e => e.search(/^addons\//) === -1)) {
 // Publish addons if any files were changed inside of the addon
 const addonPackageDirs = [
   path.resolve(__dirname, '../addons/addon-attach'),
-  path.resolve(__dirname, '../addons/addon-canvas'),
   path.resolve(__dirname, '../addons/addon-clipboard'),
   path.resolve(__dirname, '../addons/addon-fit'),
   path.resolve(__dirname, '../addons/addon-image'),

bin/test_integration.js

@@ -22,7 +22,6 @@ let configs = [
 ];
 const addons = [
   'attach',
-  'canvas',
   'clipboard',
   'fit',
   'image',