How to treat the "No instance found" of WMIC command in batch?

In a batch I want to terminate all instance of a process. I've try using:

@echo off
setlocal EnableDelayedExpansion
for /f "usebackq skip=1" %%r in (`wmic process where Name^="CALC.exe"  get Processid ^| findstr /r /v "^$"`) do SET procid=%%~r
IF [!procid!] NEQ [] (
  wmic process where Name="CALC.exe" call terminate >> NUL
) ELSE (
  GOTO :break
)
:break
SET procid=
endlocal

But if no instance of calc.exe is existing I don't want to have the "No instance(s) available" being displayed. Also I will prefer to not have the display scrolling down one line per instance of calc.exe

How to do that ??