Major updates integration from all upstreams

src/pow.cpp

@@ -322,14 +322,6 @@ bool CheckEquihashSolution(const CBlockHeader *pblock, const CChainParams& param
     // H(I||V||...
     crypto_generichash_blake2b_update(&state, (unsigned char*)&ss[0], ss.size());
 
-    #ifdef ENABLE_RUST
-    // Ensure that our Rust interactions are working in production builds. This is
-    // temporary and should be removed.
-    {
-        assert(librustzcash_xor(0x0f0f0f0f0f0f0f0f, 0x1111111111111111) == 0x1e1e1e1e1e1e1e1e);
-    }
-    #endif // ENABLE_RUST
-
     bool isValid;
     EhIsValidSolution(n, k, state, pblock->nSolution, isValid);