regex - Replace /**/ in Unix with an empty space -

I wanted to change / ** / in all the files in a folder I tried:

  perl -pi -w -e's / \ / ** \ /// g; '*. Java   
 but found an error:  Quantifiers in the Nested Rifax;  
    
   > SAD / S / / / \ / / / / g; '  
 I need to replace the original  / ** /  with empty space.   
 
 
 You also need to avoid the stars to protect the readability, you can also use other delimiters Can:  
  sed # / \ * \ * / ## g "