proc: remove fs/proc/proc_misc.c

Now that everything was moved to their more or less expected places,
apply rm(1).

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
diff --git a/fs/proc/root.c b/fs/proc/root.c
index 2a3abd2..7761602 100644
--- a/fs/proc/root.c
+++ b/fs/proc/root.c
@@ -117,7 +117,7 @@
 		return;
 	}
 
-	proc_misc_init();
+	proc_symlink("mounts", NULL, "self/mounts");
 
 	proc_net_init();