Powershell Script to remove all Blobs from Storage account

Script updated with the deletion command:

[string]$myConnectionString = "DefaultEndpointsProtocol=https;AccountName=YourStorageAccountName;AccountKey=YourKeyFromStorageAccountConnectionString;EndpointSuffix=core.windows.net"
[string]$ContainerName = "YourBlobContainerName"
[int]$blobCountAfter = 0
[int]$blobCountBefore = 0

$context = New-AzStorageContext -ConnectionString $myConnectionString

$blobCountBefore = (Get-AzStorageBlob -Container $ContainerName -Context $context).Count
Write-Host "Total number of blobs in the container Before deletion: $blobCount" -ForegroundColor Yellow

Get-AzStorageBlob -Container $ContainerName -Context $context | ForEach-Object {
    $_ | Remove-AzStorageBlob -ICloudBlob $_.ICloudBlob -Context $context
}

$blobCountAfter = (Get-AzStorageBlob -Container $ContainerName -Context $context).Count
Write-Host "Total number of blobs in the container After deletion : $blobCount" -ForegroundColor Green

It's also possible to add the batch set using the maxcount 

Get-AzStorageBlob -Container $ContainerName -Context $context -MaxCount 10000 

Fab