Recovery: remove sysfs access

Bug: 65643247
Test: adb sideload an ota package
Test: mount /system
Test: view recovery logs
Test: run graphics test
Test: run locale test
Test: wipe data/factory reset
Test: factory reset from Settings app
Tested on sailfish; no selinux denials to sysfs type are observed.

Change-Id: Ic8487d53d90b7d1d050574e0b084627d1b6abdba

public/recovery.te

@@ -58,8 +58,6 @@ recovery_only(`
   # Read kernel config through libvintf for OTA matching
   allow recovery config_gz:file { open read getattr };
 
-  r_dir_file(recovery, sysfs)
-
   # Write to /sys/class/android_usb/android0/enable.
   r_dir_file(recovery, sysfs_android_usb)
   allow recovery sysfs_android_usb:file w_file_perms;