This command deletes completed build(s) and/or related artifacts. Syntax - TfsBuild delete /collection:teamProjectCollectionUrl ...

This command deletes completed build(s) and/or related artifacts.

Syntax -
TfsBuild delete /collection:teamProjectCollectionUrl
                /buildDefinition:definitionSpec buildNumber [buildNumber ...]
                [/deleteOptions:deleteOptions] [/noPrompt] [/silent] [/preview]
   or
TfsBuild delete /collection:teamProjectCollectionUrl buildUri [buildUri ...]
   or 
TfsBuild delete teamProjectCollectionUrl teamProject buildNumber
                [buildNumber ...]
   or
TfsBuild delete /collection:teamProjectCollectionUrl /dateRange:[date]~[date]
                /buildDefinition:definitionSpec
   or
TfsBuild delete /collection:teamProjectCollectionUrl /dateRange:[date]~[date]
                teamProject

teamProjectCollectionUrl    The url to the Team Project Collection used for build(s).
definitionSpec              The specification of the build definition(s) containing
                            the build(s) to be deleted. Wildcards are supported.
buildNumber                 The build number in the Team Project to be deleted.
                            Wildcards are supported.
buildUri                    The Uri of the build to be deleted.
teamProject                 The team project used for build(s).
date                        A date, formatted in any .NET parsable format.
[/deleteOptions]            Specifies the build artifacts for deletion. Valid
                            options include: All, Details, DropLocation, Label,
                            TestResults, and Symbols. Multiple options can be
                            specified separated by a comma. Specifying All or
                            Details marks the specified build(s) as deleted and
                            hides them in the Team Foundation Client. The delete
                            command may be used multiple times on the same build(s)
                            if different options are specified with this flag.
[/noPrompt]                 Do not prompt while deleting the build(s).
[/silent]                   Do not write output to the console while deleting. 
                            Implies /noPrompt.
[/preview]                  Preview the builds selected for deletion. Does not
                            delete any builds.