DOCSP-21853: remove clone repository tab from install and upgrade doc

Author: jwilliams-mongo

source/install.txt

@@ -61,17 +61,6 @@ To install the {+mcli+}, choose one of the following methods:
    .. tab:: Download Binary
       :tabid: download-binary
 
-   .. tab:: Clone Repository
-      :tabid: clone-repo
-
-      Prerequisites
-      ~~~~~~~~~~~~~
-
-      To install the {+mcli+}, you must install the following tools:
-
-      1. `Git <https://git-scm.com/book/en/v2/Getting-Started-Installing-Git>`_.
-
-      #. `Go v1.17 or newer <https://golang.org/doc/install#install>`_.
 
 Procedure
 ~~~~~~~~~