[FAB-3728] MSPImpl generates a lot of log output

This CR removes a fmt.Printf statement from mspimpl.go which is
generating a large amount of log output.

Change-Id: I968fbde8186ce339e016682db9619fabe273e06e
Signed-off-by: Will Lahti <[email protected]>

Author: wlahti

msp/mspimpl.go

@@ -714,7 +714,6 @@ func (msp *bccspmsp) getCertificationChainForBCCSPIdentity(id *identity) ([]*x50
 
 func (msp *bccspmsp) getValidationChain(cert *x509.Certificate) ([]*x509.Certificate, error) {
 	// ask golang to validate the cert for us based on the options that we've built at setup time
-	fmt.Printf("MSP [%v]", msp)
 	validationChain, err := cert.Verify(*(msp.opts))
 	if err != nil {
 		return nil, fmt.Errorf("The supplied identity is not valid, Verify() returned %s", err)