Drop template deprecation gathering

This was broken long ago by a change in ember-cli-htmlbars. There is
a plan to bring it back, but remove it for now since the codepath is not
doing anything for most codebases.

Author: mixonic

generate-deprecations-tree.js

@@ -3,12 +3,6 @@
 module.exports = {
   name: require('./package').name,
 
-  init() {
-    this._super.init && this._super.init.apply(this, arguments);
-
-    this._templateDeprecations = [];
-  },
-
   _shouldInclude() {
     // the presence of `this.app.tests` shows that we are in one of:
     //
@@ -52,91 +46,4 @@ module.exports = {
 
     return mergeTrees([tree, configTree], { overwrite: true });
   },
-
-  _findHtmlbarsPreprocessor(registry) {
-    var plugins = registry.load('template');
-
-    return plugins.filter(function (plugin) {
-      return plugin.name === 'ember-cli-htmlbars';
-    })[0];
-  },
-
-  _monkeyPatch_EmberDeprecate(htmlbarsCompilerPreprocessor) {
-    if (!htmlbarsCompilerPreprocessor._addon) {
-      // not a new enough ember-cli-htmlbars to monkey patch
-      // we need 1.0.3
-      return;
-    }
-    var addonContext = this;
-    var originalHtmlbarsOptions =
-      htmlbarsCompilerPreprocessor._addon.htmlbarsOptions;
-    var logToNodeConsole = this.project.config(
-      process.env.EMBER_ENV
-    ).logTemplateLintToConsole;
-
-    htmlbarsCompilerPreprocessor._addon.htmlbarsOptions = function () {
-      var options = originalHtmlbarsOptions.apply(this, arguments);
-      var Ember = options.templateCompiler._Ember;
-
-      if (Ember.Debug && Ember.Debug.registerDeprecationHandler) {
-        Ember.Debug.registerDeprecationHandler(function (
-          message,
-          options,
-          next
-        ) {
-          addonContext._templateDeprecations.push({
-            message: JSON.stringify(message),
-            test: false,
-            options: JSON.stringify(options),
-          });
-
-          if (logToNodeConsole) {
-            next();
-          }
-        });
-      }
-
-      var originalDeprecate = options.templateCompiler._Ember.deprecate;
-      Ember.deprecate = function (message, test, options) {
-        var noDeprecation;
-
-        if (typeof test === 'function') {
-          noDeprecation = test();
-        } else {
-          noDeprecation = test;
-        }
-
-        if (!noDeprecation) {
-          addonContext._templateDeprecations.push({
-            message: JSON.stringify(message),
-            test: !!test,
-            options: JSON.stringify(options),
-          });
-        }
-
-        if (logToNodeConsole) {
-          return originalDeprecate.apply(this, arguments);
-        }
-      };
-
-      return options;
-    };
-  },
-
-  setupPreprocessorRegistry(type, registry) {
-    if (type === 'parent') {
-      var htmlbarsCompilerPreprocessor =
-        this._findHtmlbarsPreprocessor(registry);
-
-      this._monkeyPatch_EmberDeprecate(htmlbarsCompilerPreprocessor);
-    }
-  },
-
-  lintTree(type, tree) {
-    if (type === 'template') {
-      var TemplateLinter = require('./generate-deprecations-tree');
-
-      return new TemplateLinter(this, tree);
-    }
-  },
 };