removed unnecessary file

src/Features/.editorconfig

-# CSharp IDE Team code style settings
-# Use var as much as possible
-[*.cs]
-csharp_style_var_for_locals = true:suggestion
-csharp_style_var_for_built_in_types = true:suggestion
-csharp_style_var_when_type_is_apparent = true:suggestion
-csharp_style_var_elsewhere = true:suggestion
\ No newline at end of file