Merge branch 'weimeng-master-patch-81475' into 'master'

Prune Rails Console cheat sheet

Closes gitlab-com/support/toolbox/snippets#38, gitlab-com/support/toolbox/snippets#31, gitlab-com/support/toolbox/snippets#26, gitlab-com/support/toolbox/snippets#22, gitlab-com/support/toolbox/snippets#21, gitlab-com/support/toolbox/snippets#20, and gitlab-com/support/toolbox/snippets#3

See merge request gitlab-org/gitlab!27523

doc/administration/troubleshooting/gitlab_rails_cheat_sheet.md

@@ -160,18 +160,6 @@ GIT_CURL_VERBOSE=1 GIT_TRACE=1 git clone <repository>
 
 ## Projects
 
-### Find projects
-
-```ruby
-# A single project
-project = Project.find_by_full_path('PROJECT_PATH')
-
-# All projects in a particular namespace. Can be a username, a group
-# ('gitlab-org'), or even include subgroups ('gitlab-org/distribution')
-namespace = Namespace.find_by_full_path('NAMESPACE_PATH')
-projects = namespace.all_projects
-```
-
 ### Clear a project's cache
 
 ```ruby
@@ -407,35 +395,6 @@ end
 
 ## Users
 
-### Finding users
-
-```ruby
-# By username
-user = User.find_by(username: '')
-
-# By primary email
-user = User.find_by(email: '')
-
-# By any email (primary or secondary)
-user = User.find_by_any_email('')
-
-# Admins
-User.admins
-admin = User.admins.first
-```
-
-### Block
-
-```ruby
-User.find_by_username().block!
-```
-
-### Unblock
-
-```ruby
-User.find_by_username().active
-```
-
 ### Skip reconfirmation
 
 ```ruby
@@ -476,13 +435,6 @@ User.find(123).personal_access_tokens.create(
 )
 ```
 
-### Disable 2FA on a user
-
-```ruby
-user = User.find_by_username('username')
-user.disable_two_factor!
-```
-
 ### Active users & Historical users
 
 ```ruby
@@ -546,20 +498,6 @@ group = Group.find_by_full_path 'group'
 user.max_member_access_for_group group.id
 ```
 
-### Change user password
-
-```ruby
-password = "your password"
-user = User.find_by_username('your username')
-password_attributes = {
-  password: password,
-  password_confirmation: password,
-  password_automatically_set: false
-}
-
-result = Users::UpdateService.new(user, password_attributes.merge(user: user)).execute
-```
-
 ## Groups
 
 ### Count unique users in a group and sub-groups
@@ -706,13 +644,6 @@ conflicting_permanent_redirects.destroy_all
 
 ## Merge Requests
 
-### Find Merge Request
-
-```ruby
-m = project.merge_requests.find_by(iid: <IID>)
-m = MergeRequest.find_by_title('NEEDS UNIQUE TITLE!!!')
-```
-
 ### Close a merge request properly (if merged but still marked as open)
 
 ```ruby