script: remove bignum dependency

src/script.cpp

@@ -5,7 +5,6 @@
 
 #include "script.h"
 
-#include "bignum.h"
 #include "core.h"
 #include "hash.h"
 #include "key.h"

src/script.h

@@ -6,7 +6,6 @@
 #ifndef H_BITCOIN_SCRIPT
 #define H_BITCOIN_SCRIPT
 
-#include "bignum.h"
 #include "key.h"
 #include "util.h"
 
@@ -441,7 +440,6 @@ public:
     explicit CScript(opcodetype b)     { operator<<(b); }
     explicit CScript(const uint256& b) { operator<<(b); }
     explicit CScript(const CScriptNum& b) { operator<<(b); }
-    explicit CScript(const CBigNum& b) { operator<<(b); }
     explicit CScript(const std::vector<unsigned char>& b) { operator<<(b); }
 
 
@@ -477,12 +475,6 @@ public:
         return *this;
     }
 
-    CScript& operator<<(const CBigNum& b)
-    {
-        *this << b.getvch();
-        return *this;
-    }
-
     CScript& operator<<(const CScriptNum& b)
     {
         *this << b.getvch();