runtime(sh): remove invalid commented out line in syntax script

Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/runtime/indent/sh.vim b/runtime/indent/sh.vim
index cc433ba..a1abd1d 100644
--- a/runtime/indent/sh.vim
+++ b/runtime/indent/sh.vim
@@ -307,7 +307,6 @@
 endfunction
 
 function! s:start_block(line)
-#  return a:line =~ '{\s*\(#.*\)\?$'
   return a:line =~ '^[^#]*[{(]\s*\(#.*\)\?$'
 endfunction