[FAB-5104] unused code in msp packages

This patch set deletes unused code in msp packages.

Change-Id: I90edab4145efc995ba45f349c6dd2d2947eb644a
Signed-off-by: Nao Nishijima <nao.nishijima@hal.hitachi.com>

Author: Nao Nishijima

msp/cert.go

@@ -31,12 +31,6 @@ import (
 	"github.com/hyperledger/fabric/bccsp/sw"
 )
 
-type dsaSignature struct {
-	R, S *big.Int
-}
-
-type ecdsaSignature dsaSignature
-
 type validity struct {
 	NotBefore, NotAfter time.Time
 }

msp/mspimpl.go

@@ -1112,16 +1112,3 @@ func (msp *bccspmsp) getValidityOptsForCert(cert *x509.Certificate) x509.VerifyO
 
 	return tempOpts
 }
-
-func (msp *bccspmsp) getValidityOptsForTLSCert(cert *x509.Certificate) x509.VerifyOptions {
-	// First copy the opts to override the CurrentTime field
-	// in order to make the certificate passing the expiration test
-	// independently from the real local current time.
-	// This is a temporary workaround for FAB-3678
-
-	var tempOpts x509.VerifyOptions
-	tempOpts.Roots = msp.opts.Roots
-	tempOpts.Intermediates = msp.opts.Intermediates
-
-	return tempOpts
-}