Remove g:neosnippet#enable_preview

autoload/neocomplcache/sources/snippets_complete.vim

@@ -39,8 +39,6 @@ function! s:source.initialize() "{{{
         \ g:neocomplcache_source_rank, 'snippets_complete', 8)
   call neocomplcache#set_completion_length('snippets_complete',
         \ g:neocomplcache_auto_completion_start_length)
-  call neosnippet#util#set_default(
-        \ 'g:neosnippet#enable_preview', 0)
 endfunction"}}}
 
 function! s:source.get_keyword_pos(cur_text) "{{{
@@ -63,9 +61,6 @@ function! s:source.get_complete_words(cur_keyword_pos, cur_keyword_str) "{{{
 
     let snippet.menu = neosnippet#util#strwidthpart(
           \ snippet.menu_template, winwidth(0)/3)
-    if g:neosnippet#enable_preview
-      let snippet.info = snippet.snip
-    endif
   endfor
 
   return list

autoload/neocomplete/sources/neosnippet.vim

@@ -36,12 +36,6 @@ let s:source = {
       \          ['matcher_fuzzy'] : ['matcher_head']),
       \}
 
-function! s:source.hooks.on_init(context) "{{{
-  " Initialize.
-  call neosnippet#util#set_default(
-        \ 'g:neosnippet#enable_preview', 0)
-endfunction"}}}
-
 function! s:source.gather_candidates(context) "{{{
   let snippets = values(neosnippet#helpers#get_snippets())
   if matchstr(a:context.input, '\S\+$') !=#
@@ -57,9 +51,6 @@ function! s:source.hooks.on_post_filter(context) "{{{
     let snippet.dup = 1
     let snippet.menu = neosnippet#util#strwidthpart(
           \ snippet.menu_template, winwidth(0)/3)
-    if g:neosnippet#enable_preview
-      let snippet.info = snippet.snip
-    endif
   endfor
 
   return a:context.candidates

doc/neosnippet.txt

@@ -202,12 +202,6 @@ g:neosnippet#enable_snipmate_compatibility
 		load |g:snippets_dir| and snipMate snippets automatically from
 		'runtimepath'.
 
-		The default value is 0.
-
-g:neosnippet#enable_preview			 *g:neosnippet#enable_preview*
-		If this variable is not 0, neosnippet will enable the preview
-		window feature in neocomplcache/neocomplete sources.
-
 		The default value is 0.
 
 					 *g:neosnippet#expand_word_boundary*