Remove copied category: from frontmatter

ko/coffeescript.md

@@ -1,5 +1,4 @@
 ---
-category: language
 contributors:
   - ["Tenor Biel", "http://github.com/L8D"]
 filename: coffeescript-kr.coffee

ko/common-lisp.md

@@ -1,5 +1,4 @@
 ---
-category: language
 filename: commonlisp-kr.lisp
 contributors:
   - ["Paul Nathan", "https://github.com/pnathan"]

ko/go.md

@@ -1,5 +1,4 @@
 ---
-category: language
 filename: learngo-kr.go
 contributors:
     - ["Sonia Keys", "https://github.com/soniakeys"]

ko/java.md

@@ -1,6 +1,5 @@
 ---
 filename: java-kr.java
-category: language
 contributors:
     - ["Jake Prather", "http://github.com/JakeHP"]
 translators:

ko/javascript.md

@@ -1,5 +1,4 @@
 ---
-category: language
 contributors:
     - ["Leigh Brenecki", "https://leigh.net.au"]
 translators:

ko/lua.md

@@ -1,5 +1,4 @@
 ---
-category: language
 contributors:
     - ["Tyler Neylon", "http://tylerneylon.com/"]
 translators:

ko/php.md

@@ -1,5 +1,4 @@
 ---
-category: language
 contributors:
     - ["Malcolm Fell", "http://emarref.net/"]
     - ["Trismegiste", "https://github.com/Trismegiste"]

ko/pythonlegacy.md

@@ -1,5 +1,4 @@
 ---
-category: language
 contributors:
     - ["Louie Dinh", "http://ldinh.ca"]
 filename: learnpythonlegacy-ko.py

ko/vim.md

@@ -1,5 +1,4 @@
 ---
-category: tool
 contributors:
     - ["RadhikaG", "https://github.com/RadhikaG"]
 translators: