Comment out some unused functions.

node/C25519.cpp

@@ -765,12 +765,15 @@ void sc25519_from64bytes(sc25519 *r, const unsigned char x[64])
 	barrett_reduce(r, t);
 }
 
+/*
 void sc25519_to32bytes(unsigned char r[32], const sc25519 *x)
 {
 	int i;
 	for(i=0;i<32;i++) r[i] = x->v[i];
 }
+*/
 
+/*
 void sc25519_add(sc25519 *r, const sc25519 *x, const sc25519 *y)
 {
 	int i, carry;
@@ -783,7 +786,9 @@ void sc25519_add(sc25519 *r, const sc25519 *x, const sc25519 *y)
 	}
 	reduce_add_sub(r);
 }
+*/
 
+/*
 void sc25519_mul(sc25519 *r, const sc25519 *x, const sc25519 *y)
 {
 	int i,j,carry;
@@ -794,7 +799,6 @@ void sc25519_mul(sc25519 *r, const sc25519 *x, const sc25519 *y)
 		for(j=0;j<32;j++)
 			t[i+j] += x->v[i] * y->v[j];
 
-	/* Reduce coefficients */
 	for(i=0;i<63;i++)
 	{
 		carry = t[i] >> 8;
@@ -804,6 +808,7 @@ void sc25519_mul(sc25519 *r, const sc25519 *x, const sc25519 *y)
 
 	barrett_reduce(r, t);
 }
+*/
 
 void sc25519_window3(signed char r[85], const sc25519 *s)
 {