remove useless file

.editorconfig

@@ -1,38 +0,0 @@
-# EditorConfig is awesome: http://EditorConfig.org
-
-# top-most EditorConfig file
-root = true
-
-# Unix-style newlines with a newline ending every file
-[*]
-end_of_line = lf
-insert_final_newline = true
-
-[*.{c,cpp,h,hpp}]
-charset = utf-8
-indent_style = space
-indent_size = 2
-
-# Matches multiple files with brace expansion notation
-# Set default charset
-[*.{js,py}]
-charset = utf-8
-
-# 4 space indentation
-[*.py]
-indent_style = space
-indent_size = 4
-
-# Tab indentation (no size specified)
-[Makefile]
-indent_style = tab
-
-# Indentation override for all JS under lib directory
-[lib/**.js]
-indent_style = space
-indent_size = 2
-
-# Matches the exact files either package.json or .travis.yml
-[{package.json,.travis.yml}]
-indent_style = space
-indent_size = 2