Remove proc label access from kernel domain.

Bug: 65643247
Test: sailfish boots, can take pictures, use browser without denials
form kernel domain.
Change-Id: I4fc0555f0b65fc5537e0b2765142b384ed0560c8
diff --git a/public/kernel.te b/public/kernel.te
index 64111b0..74c77a9 100644
--- a/public/kernel.te
+++ b/public/kernel.te
@@ -5,7 +5,6 @@
 
 # Root fs.
 r_dir_file(kernel, rootfs)
-r_dir_file(kernel, proc)
 allow kernel proc_cmdline:file r_file_perms;
 
 # Get SELinux enforcing status.