remove current_compiler check.

that check is for the standard implementations, not mine

vim/.vim/compiler/dotnet.vim

@@ -6,9 +6,6 @@
 " License:             Vim (see :h license)
 " Repository:          https://github.com/nickspoons/vim-cs
 
-if exists("current_compiler")
-  finish
-endif
 let current_compiler = "dotnet"
 
 let s:cpo_save = &cpo