[PATCH] gitcli: drop mention of “non-dashed form”

Git builtins used to be called like e.g. `git-commit`, not `git commit` (*dashed form* and *non-dashed form*, respectively). The dashed form was deprecated in version 1.5.4 (2006). Now only a few commands have an alternative dashed form when `SKIP_DASHED_BUILT_INS` is active.[1]

The mention here is from 2f7ee089dff (parse-options: Add a gitcli(5) man page., 2007-12-13), back when the deprecation was relatively recent. These days though it seems like an irrelevant point to make to budding CLI scripters—you don’t have to warn against a style that probably doesn’t even work on their git(1) installation.

† 1: 179227d6e21 (Optionally skip linking/copying the built-ins,
    2020-09-21)

Signed-off-by: Kristoffer Haugsbakk <code@khaugsbakk.name>
---

Notes (series):
    Now:
    
    ```
    $ git grep --files-with-matches 'dashed form'
    Documentation/RelNotes/1.5.4.txt
    Documentation/RelNotes/2.16.0.txt
    Makefile
    t/README
    ```
    
    For 179227d6e21 (Optionally skip linking/copying the built-ins,
    2020-09-21):
    
    (sorry for the resend; I sent to my test address first)
    
    Cc: Johannes Schindelin <johannes.schindelin@gmx.de>

 Documentation/gitcli.txt | 3 ---
 1 file changed, 3 deletions(-)