doc: remove duplicate page inclusion

doc/usage/index.rst in branch origin/next includes usage/environment twice.
Remove the duplicate entry.

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>

diff --git a/doc/usage/index.rst b/doc/usage/index.rst
index 3905540735c0b03af01cd21d61e9d602ee0d06e0..33761af96afb563f05c0ba5d21ebe6faec6f38e7 100644 (file)
--- a/doc/usage/index.rst
+++ b/doc/usage/index.rst
@@ -11,7 +11,6 @@ Use U-Boot
    netconsole
    partitions
    cmdline
-   environment
 
 Shell commands
 --------------