[PATCH] kernel_lockdown.7: Remove description of lifting via SysRq (not upstream)

[dann frazier <dann.frazier@canonical.com>]

The patch that implemented lockdown lifting via SysRq ended up getting
dropped[*] before the feature was merged upstream. Having the feature
documented but unsupported has caused some confusion for our users.

[*] http://archive.lwn.net:8080/linux-kernel/CACdnJuuxAM06TcnczOA6NwxhnmQUeqqm3Ma8btukZpuCS+dOqg@mail.gmail.com/

Signed-off-by: dann frazier <dann.frazier@canonical.com>
---
 man7/kernel_lockdown.7 | 6 ------
 1 file changed, 6 deletions(-)

diff --git a/man7/kernel_lockdown.7 b/man7/kernel_lockdown.7
index 30863de62..29ffd55c3 100644
--- a/man7/kernel_lockdown.7
+++ b/man7/kernel_lockdown.7
@@ -33,12 +33,6 @@ where X indicates the process name and Y indicates what is restricted.
 .PP
 On an EFI-enabled x86 or arm64 machine, lockdown will be automatically enabled
 if the system boots in EFI Secure Boot mode.
-.PP
-If the kernel is appropriately configured, lockdown may be lifted by typing
-the appropriate sequence on a directly attached physical keyboard.
-For x86 machines, this is
-.IR SysRq+x .
-.\"
 .SS Coverage
 When lockdown is in effect, a number of features are disabled or have their
 use restricted.
-- 
2.31.1