changed to make rusthon a python alias.

https://github.com/github/linguist/pull/2001

lib/linguist/languages.yml

@@ -2376,6 +2376,8 @@ Python:
   - python
   - python2
   - python3
+  aliases:
+  - rusthon
 
 Python traceback:
   type: data
@@ -2386,11 +2388,6 @@ Python traceback:
   tm_scope: text.python.traceback
   ace_mode: text
 
-Rusthon:
-  type: programming
-  ace_mode: python
-  color: "#3581ba"
-
 QML:
   type: markup
   color: "#44a51c"