[PATCH] ext: remove a vestige of ruby <2.0 support

[Eric Wong]

The actual `id_clear' declaration was removed last year, but
I missed it's (unused) initialization :x

Fixes: c56eb04d683e ("drop Ruby 1.9.3 support, require 2.0+ for now")
---
 ext/unicorn_http/unicorn_http.rl | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/ext/unicorn_http/unicorn_http.rl b/ext/unicorn_http/unicorn_http.rl
index afdf680..fb5dcde 100644
--- a/ext/unicorn_http/unicorn_http.rl
+++ b/ext/unicorn_http/unicorn_http.rl
@@ -1033,9 +1033,6 @@ void Init_unicorn_http(void)
   id_set_backtrace = rb_intern("set_backtrace");
   init_unicorn_httpdate();
 
-#ifndef HAVE_RB_HASH_CLEAR
-  id_clear = rb_intern("clear");
-#endif
   id_is_chunked_p = rb_intern("is_chunked?");
 
   init_epollexclusive(mUnicorn);