remove duplicated code (#38)

Author: Coot

indent/purescript.vim

@@ -69,10 +69,6 @@ function! s:GetSynStack(lnum, col)
   return map(synstack(a:lnum, a:col), { key, val -> synIDattr(val, "name") })
 endfunction
 
-function! s:GetSynStack(lnum, col)
-  return map(synstack(a:lnum, a:col), { key, val -> synIDattr(val, "name") })
-endfunction
-
 function! GetPurescriptIndent()
   let ppline = getline(v:lnum - 2)
   let prevline = getline(v:lnum - 1)