init/version.c: remove #include <linux/version.h>

This is unneeded since commit 073a9ecb ("init/version.c: remove
Version_<LINUX_VERSION_CODE> symbol").
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>

init/version.c

@@ -16,7 +16,6 @@
 #include <linux/uts.h>
 #include <linux/utsname.h>
 #include <generated/utsrelease.h>
-#include <linux/version.h>
 #include <linux/proc_ns.h>
 
 struct uts_namespace init_uts_ns = {