Remove AppleScript from previous names

By now, everyone should have received the rename. This still
causes the original package to be deleted on install, on ST2.

References wbond/package_control#890.

repository/a.json

@@ -817,7 +817,7 @@
 			"name": "AppleScript Extensions",
 			"details": "https://github.com/idleberg/AppleScript-Sublime-Text",
 			"labels": ["auto-complete", "build system", "snippets"],
-			"previous_names": ["AppleScript", "AppleScript Completions and Snippets"],
+			"previous_names": ["AppleScript Completions and Snippets"],
 			"releases": [
 				{
 					"sublime_text": "*",