You can use PowerShell to remove the consent screen / permission pop-up screen.
You will need Office 365 Global admins or Azure Active Directory Global admin permission to your account, or someone with this permission can help you.
Install Powershell module:
Install-Module -Name Microsoft.PowerApps.Administration.PowerShell
Install-Module -Name Microsoft.PowerApps.PowerShell -AllowClobber
Get Power Apps APP ID from the Details screen of your PowerApps.
Finally from Powershell,
Set-AdminPowerAppApisToBypassConsent -AppName <YOUR_APP_ID>
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