Deleting Interfaces

I am creating a basic script that will ultimately automatically remove loopback, mgmt., null interfaces and others once a week.  The script below does return Uri's as intended however when I add the remove object statement it throws an error I do not understand

$ErrorActionPreference = 'Stop'

#Add the snapin

Add-PSSnapin SwisSnapin

#create a connection to solarwinds

$hostname = '10.X.X.X'
$username = 'admin'
$password = 'XXXXX'

#swis = Connect-Swis -Hostanme $hostname -Trusted

$swis = Connect-Swis -Hostname $hostname -Username $username -Password $password

#Query Data

$query = Get-SwisData $swis "Select uri FROM Orion.NPM.interfaces WHERE InterfaceName = 'lo'"

# This returns the following Uri's

swis://XXXX.my.domain.net/Orion/Orion.Nodes/NodeID=123/Interfaces/InterfaceID=321

swis://XXXX.my.domain.net/Orion/Orion.Nodes/NodeID=456/Interfaces/InterfaceID=654

swis://XXXX.my.domain.net/Orion/Orion.Nodes/NodeID=789/Interfaces/InterfaceID=987

# When adding the final remove object line...

$query | ForEach-Object { Remove-SwisObject $swis $query }

I get the error below

ForEach-Object : Cannot convert 'System.Object[]' to the type 'System.String' required by parameter

'Uri'. Specified method is not supported.

At C:\Users\nsd000.QACMA\Documents\PowerShell Scripts\Do not Modify\Delete Loopbacks MGMT and Null

Interfaces.ps1:22 char:10

+ $query | ForEach-Object { Remove-SwisObject $swis $query }

+          ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

    + CategoryInfo          : InvalidArgument: (:) [ForEach-Object], ParameterBindingException

    + FullyQualifiedErrorId : CannotConvertArgument,Microsoft.PowerShell.Commands.ForEachObjectComma

   nd

This format works well when I use the same logic on the script below.  The only difference I can see is that the script above is pulling from Orion.NPM.Interfaces and the one below is Orion.Volumes

$ErrorActionPreference = 'Stop'

#Add the snapin
Add-PSSnapin SwisSnapin

#create a connection to solarwinds

$hostname = '10.xXX'

$username = 'admin'

$password = 'XXXXX'

#swis = Connect-Swis -Hostanme $hostname -Trusted
$swis = Connect-Swis -Hostname $hostname -Username $username -Password $password

#Query Data

$query = Get-SwisData $swis "Select uri FROM Orion.volumes WHERE VolumeDescription = 'Cached Memory' AND VolumePercentUsed ='100'"

# Remove Objects 

$query | ForEach-Object { Remove-SwisObject $swis $query }