Removed outdated metadata

Related to: https://gitlab.com/gitlab-org/gitlab/-/issues/247288

doc/gitlab-basics/start-using-git.md

 ---
 stage: Create
 group: Source Code
-info: "To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#designated-technical-writers"
+info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#designated-technical-writers
 type: howto, tutorial
 description: "Introduction to using Git through the command line."
-last_updated: 2020-06-30
 ---
 
 # Start using Git on the command line

doc/topics/git/how_to_install_git/index.md

 ---
 stage: Create
 group: Source Code
-info: "To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#designated-technical-writers"
-author: Sean Packham
-author_gitlab: SeanPackham
-level: beginner
-article_type: user guide
-date: 2017-05-15
+info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#designated-technical-writers
 description: 'This article describes how to install Git on macOS, Ubuntu Linux and Windows.'
 type: howto
-last_updated: 2020-04-22
 ---
 
 # Installing Git

doc/topics/git/numerous_undo_possibilities_in_git/index.md

 ---
 stage: Create
 group: Source Code
-info: "To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#designated-technical-writers"
-author: Crt Mori
-author_gitlab: Letme
-level: intermediary
-article_type: tutorial
-date: 2017-05-15
+info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#designated-technical-writers
 type: howto
-last_updated: 2019-05-31
 ---
 
 # Numerous undo possibilities in Git

doc/user/project/file_lock.md

 ---
 stage: Create
 group: Source Code
-info: "To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#designated-technical-writers"
+info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#designated-technical-writers
 type: reference, howto
-last_updated: 2020-09-07
 ---
 
 # File Locking **(CORE)**