fix: Removing faulty information regarding kaniko flags

As far as my testing and source code investigations go kaniko flags set in `.jx/settings.yaml` are not used.

Signed-off-by: Mårten Svantesson <Marten.Svantesson@ticket.se>

content/en/v3/develop/faq/config/general.md

@@ -47,11 +47,6 @@ spec:
     kanikoFlags: "--snapshotMode=redo"     
 ```
 
-To override it for a specific repository you can use the `.jx/settings.yaml` to configure the same thing.
-
-See the [file reference](/v3/develop/reference/files/)
-
-
 ## If I add a file to `config-root` it gets deleted, why?
 
 The `config-root` directory is regenerated on every boot job - basically every time you promote an application or merge a change into the main branch of your git dev cluster git repository.  For background see the [dev git repository layout docs](https://github.com/jenkins-x/jx-gitops/blob/master/docs/git_layout.md))
@@ -113,4 +108,4 @@ To use the [jx cli](/v3/develop/ui/cli/) try:
 jx pipeline grid
 ```
 
-(and hit Ctrl-c or `q` to quit)
+(and hit Ctrl-c or `q` to quit)