remove CPubKey::VerifyCompact( ) which is never used

src/key.cpp

@@ -485,21 +485,6 @@ bool CPubKey::RecoverCompact(const uint256 &hash, const std::vector<unsigned cha
     return true;
 }
 
-bool CPubKey::VerifyCompact(const uint256 &hash, const std::vector<unsigned char>& vchSig) const {
-    if (!IsValid())
-        return false;
-    if (vchSig.size() != 65)
-        return false;
-    CECKey key;
-    if (!key.Recover(hash, &vchSig[1], (vchSig[0] - 27) & ~4))
-        return false;
-    CPubKey pubkeyRec;
-    key.GetPubKey(pubkeyRec, IsCompressed());
-    if (*this != pubkeyRec)
-        return false;
-    return true;
-}
-
 bool CPubKey::IsFullyValid() const {
     if (!IsValid())
         return false;

src/key.h

@@ -156,10 +156,6 @@ public:
     // If this public key is not fully valid, the return value will be false.
     bool Verify(const uint256 &hash, const std::vector<unsigned char>& vchSig) const;
 
-    // Verify a compact signature (~65 bytes).
-    // See CKey::SignCompact.
-    bool VerifyCompact(const uint256 &hash, const std::vector<unsigned char>& vchSig) const;
-
     // Recover a public key from a compact signature.
     bool RecoverCompact(const uint256 &hash, const std::vector<unsigned char>& vchSig);