Revert "Linux (nss) implementations of RSAPrivateKey and SignatureCreator"

base/crypto/signature_creator.h

Index: base/crypto/signature_creator.h
diff --git a/base/crypto/signature_creator.h b/base/crypto/signature_creator.h
index 6c7ddbc26d369db3dff8dd187b691d8046712e44..0b66baa2b16254e4e4a2efc513017e915401d45f 100644
--- a/base/crypto/signature_creator.h
+++ b/base/crypto/signature_creator.h
@@ -5,15 +5,11 @@
 #ifndef BASE_CRYPTO_SIGNATURE_CREATOR_H_
 #define BASE_CRYPTO_SIGNATURE_CREATOR_H_
 
-#include "build/build_config.h"
-
-#if defined(USE_NSS)
-#include <cryptoht.h>
-#elif defined(OS_MACOSX)
-// TODO(port)
-#elif defined(OS_WIN)
+#if defined(OS_WIN)
 #include <windows.h>
 #include <wincrypt.h>
+#else
+// TODO(PORT)
 #endif
 
 #include <vector>
@@ -41,15 +37,11 @@ class SignatureCreator {
 
  private:
   // Private constructor. Use the Create() method instead.
-  SignatureCreator();
+  SignatureCreator() {}
 
   RSAPrivateKey* key_;
 
-#if defined(USE_NSS)
-  SGNContext* sign_context_;
-#elif defined(OS_MACOSX)
-  // TODO(port)
-#elif defined(OS_WIN)
+#if defined(OS_WIN)
   HCRYPTHASH hash_object_;
 #endif