SharePoint Online: Delete List View using PowerShell

How to Delete a View in SharePoint Online?
To delete a list view in SharePoint online, follow these steps:

• Login to your SharePoint online site, Navigate to the list containing the view you want to delete.
• Select the View to delete. Click on Modify this View (Or go to list settings, Click on the respective view title)
• On Edit view page, Click on "Delete" button. Confirm the prompt once to delete the view from SharePoint online list or library.
  

Please note, Except the default view, You can delete any existing views of the SharePoint Online lists and libraries. If you want to delete a default view, you must first set a different view as the default, and then delete the former default view!

SharePoint Online: Delete Custom View using PowerShell
Here is the PowerShell to Delete a view in SharePoint Online

#Load SharePoint CSOM Assemblies
Add-Type -Path "C:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\16\ISAPI\Microsoft.SharePoint.Client.dll"
Add-Type -Path "C:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\16\ISAPI\Microsoft.SharePoint.Client.Runtime.dll"
  
#Variables for Processing
$SiteURL="https://crescent.sharepoint.com"
$ListName= "Projects"
$ViewName="Active Projects"

Try {
    #Get Credentials to connect
    $Cred = Get-Credential
    $Credentials = New-Object Microsoft.SharePoint.Client.SharePointOnlineCredentials($Cred.Username, $Cred.Password)

    #Setup the context
    $Ctx = New-Object Microsoft.SharePoint.Client.ClientContext($SiteURL)
    $Ctx.Credentials = $Credentials

    #Get the List
    $List = $Ctx.Web.Lists.GetByTitle($ListName)

    #Get the view to delete
    $View = $List.Views.getByTitle($ViewName)
    
    #Delete the list view
    $View.DeleteObject()
    $Ctx.ExecuteQuery()

    Write-host "View '$ViewName' deleted Successfully!" -ForegroundColor Green
 }
Catch {
    write-host -f Red "Error Deleting List View!" $_.Exception.Message
}

PowerShell Script to Delete a List View in SharePoint Online:
The above script can be wrapped into a re-usable function. Here is how:

#Load SharePoint CSOM Assemblies
Add-Type -Path "C:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\16\ISAPI\Microsoft.SharePoint.Client.dll"
Add-Type -Path "C:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\16\ISAPI\Microsoft.SharePoint.Client.Runtime.dll"
 
Function Remove-ListView()
{
    param(
        [Parameter(Mandatory=$true)][string]$SiteURL,
        [Parameter(Mandatory=$false)][System.Management.Automation.PSCredential] $Cred,
        [Parameter(Mandatory=$true)][string]$ListName,
        [Parameter(Mandatory=$true)][string]$ViewName
    )

    Try {
        $Credentials = New-Object Microsoft.SharePoint.Client.SharePointOnlineCredentials($Cred.Username, $Cred.Password)

        #Setup the context
        $Ctx = New-Object Microsoft.SharePoint.Client.ClientContext($SiteURL)
        $Ctx.Credentials = $Credentials

        #Get the List
        $List = $Ctx.Web.Lists.GetByTitle($ListName)

        #Get the view to delete
        $View = $List.Views.getByTitle($ViewName)
    
        #Delete the list view
        $View.DeleteObject()
        $Ctx.ExecuteQuery()

        Write-host "View '$ViewName' deleted Successfully!" -ForegroundColor Green
     }
    Catch {
        write-host -f Red "Error Deleting List View!" $_.Exception.Message
    }
}

#Call the function to delete list view
Remove-ListView -SiteURL "https://crescent.sharepoint.com" -Cred (Get-Credential) -ListName "Projects" -ViewName "Active Projects"

SharePoint Online: Delete a view using PnP PowerShell

#Config Variables
$SiteURL = "https://crescenttech.sharepoint.com"
$ListName= "Projects"
$ViewName= "Active Projects"

#Get Credentials to connect
$Cred = Get-Credential

Try {
    #Connect to PNP Online
    Connect-PnPOnline -Url $SiteURL -Credentials $Cred

    #Remove List View
    Remove-PnPView -List $ListName -Identity $ViewName -Force -ErrorAction Stop
}
catch {
    write-host "Error: $($_.Exception.Message)" -foregroundcolor Red
}