Remove bootanim access to proc label.

Bug: 65643247
Test: device boots without denials from bootanim to proc.
Change-Id: I0454a2bd4489d7816d82a299f5bc199d6a299ec0

public/bootanim.te

@@ -31,7 +31,6 @@ allow bootanim hal_graphics_allocator:fd use;
 allow bootanim hal_graphics_composer:fd use;
 
 # Read access to pseudo filesystems.
-r_dir_file(bootanim, proc)
 allow bootanim proc_meminfo:file r_file_perms;
 r_dir_file(bootanim, sysfs)
 r_dir_file(bootanim, cgroup)