gopls/doc: remove bad gopls cli link

This link for "more information" just points to the same doc.

Change-Id: Ib9fee88d5dc9225a91547bd9e7c677e8989ca1a8
Reviewed-on: https://go-review.googlesource.com/c/tools/+/357369
Reviewed-by: Rebecca Stambler <[email protected]>
Trust: Rebecca Stambler <[email protected]>
Trust: Robert Findley <[email protected]>
Run-TryBot: Rebecca Stambler <[email protected]>
gopls-CI: kokoro <[email protected]>
TryBot-Result: Go Bot <[email protected]>

Author: ameowlia

gopls/doc/command-line.md

@@ -13,5 +13,3 @@ Much of the functionality of `gopls` is available through a command line interfa
 There are two main reasons for this. The first is that we do not want users to rely on separate command line tools when they wish to do some task outside of an editor. The second is that the CLI assists in debugging. It is easier to reproduce behavior via single command.
 
 It is not a goal of `gopls` to be a high performance command line tool. Its command line is intended for single file/package user interaction speeds, not bulk processing.
-
-For more information, see the `gopls` [command line page](command-line.md).