Merge pull request #8682 from atom/tj-remove-deprecations

Remove deprecated code

package.json

@@ -21,8 +21,6 @@
     "clear-cut": "^2.0.1",
     "coffee-script": "1.8.0",
     "color": "^0.7.3",
-    "delegato": "^1",
-    "emissary": "^1.3.3",
     "event-kit": "^1.3.0",
     "first-mate": "^5.0.0",
     "fs-plus": "^2.8.0",
@@ -35,12 +33,10 @@
     "jquery": "^2.1.1",
     "less-cache": "0.22",
     "marked": "^0.3.4",
-    "mixto": "^1",
     "normalize-package-data": "^2.0.0",
     "nslog": "^2.0.0",
     "oniguruma": "^4.2.4",
     "pathwatcher": "^5.0.0",
-    "property-accessors": "^1.1.3",
     "random-words": "0.0.1",
     "runas": "2.0.0",
     "scandal": "2.1.2",
@@ -48,13 +44,11 @@
     "scrollbar-style": "^3.1",
     "season": "^5.3",
     "semver": "^4.3.3",
-    "serializable": "^1",
     "service-hub": "^0.6.2",
     "source-map-support": "^0.3.2",
     "stacktrace-parser": "0.1.1",
     "temp": "0.8.1",
     "text-buffer": "7.0.3",
-    "theorist": "^1.0.2",
     "typescript-simple": "1.0.0",
     "underscore-plus": "^1.6.6",
     "yargs": "^3.23.0"