[master] e9a3ddc09 Revert "Add missed include"

[Dridi Boukelmoune]

commit e9a3ddc0913ff3cd80e2e4cef6558900143f919f
Author: Dridi Boukelmoune <dridi.boukelmoune at gmail.com>
Date:   Wed Jun 11 09:11:05 2025 +0200

    Revert "Add missed include"
    
    This reverts commit 119832d5e964b01dd672ef6e15f4e2c128bd0c4e.
    
    It should no longer be needed now that the acceptor's shutdown mutex is
    an instrumented lock.

diff --git a/bin/varnishd/acceptor/cache_acceptor.h b/bin/varnishd/acceptor/cache_acceptor.h
index 11f143a22..33065f5bc 100644
--- a/bin/varnishd/acceptor/cache_acceptor.h
+++ b/bin/varnishd/acceptor/cache_acceptor.h
@@ -30,8 +30,6 @@
  *
  */
 
-#include <pthread.h>
-
 /* cache_acceptor.c */
 struct listen_sock;
 struct listen_arg;