Remove copied names from frontmatter

vi/git.md

@@ -1,6 +1,5 @@
 ---
 category: tool
-tool: Git
 contributors:
     - ["Jake Prather", "http://github.com/JakeHP"]
     - ["Vinh Nguyen", "https://twitter.com/vinhnx"]

vi/html.md

@@ -1,5 +1,4 @@
 ---
-language: HTML
 filename: learnhtml-vi.txt
 contributors:
     - ["Christophe THOMAS", "https://github.com/WinChris"]

vi/json.md

@@ -1,5 +1,4 @@
 ---
-language: JSON
 filename: learnjson-vi.json
 contributors:
   - ["Anna Harren", "https://github.com/iirelu"]

vi/less.md

@@ -1,5 +1,4 @@
 ---
-language: Less
 contributors:
   - ["Saravanan Ganesh", "http://srrvnn.me"]
 translators:

vi/markdown.md

@@ -1,5 +1,4 @@
 ---
-language: Markdown
 contributors:
     - ["Dan Turkel", "http://danturkel.com/"]
     - ["Jacob Ward", "http://github.com/JacobCWard/"]

vi/objective-c.md

@@ -1,5 +1,4 @@
 ---
-language: Objective-C
 contributors:
     - ["Eugene Yagrushkin", "www.about.me/yagrushkin"]
     - ["Yannick Loriot", "https://github.com/YannickL"]

vi/python.md

@@ -1,5 +1,4 @@
 ---
-language: Python
 filename: learnpython-vi.py
 contributors:
     - ["Louie Dinh", "http://pythonpracticeprojects.com"]

vi/ruby-ecosystem.md

@@ -1,6 +1,5 @@
 ---
 category: tool
-tool: Ruby ecosystem
 contributors:
     - ["Jon Smock", "http://github.com/jonsmock"]
     - ["Rafal Chmiel", "http://github.com/rafalchmiel"]

vi/ruby.md

@@ -1,5 +1,4 @@
 ---
-language: Ruby
 filename: learnruby-vi.rb
 contributors:
   - ["David Underwood", "http://theflyingdeveloper.com"]

vi/sass.md

@@ -1,5 +1,4 @@
 ---
-language: Sass
 filename: learnsass-vi.scss
 contributors:
   - ["Laura Kyle", "https://github.com/LauraNK"]

vi/typescript.md

@@ -1,5 +1,4 @@
 ---
-language: TypeScript
 contributors:
     - ["Philippe Vlérick", "https://github.com/pvlerick"]
 translators:

vi/xml.md

@@ -1,5 +1,4 @@
 ---
-language: XML
 filename: learnxml.xml
 contributors:
   - ['João Farias', 'https://github.com/JoaoGFarias']