RPC tests: fixes merkle_blocks.py to exclude 1st coinbase (#423)
RPC tests: fixes merkle_blocks.py to exclude 1st coinbase (#423)

* fixes merkle_blocks.py to exclude 1st coinbase

* Update qa/rpc-tests/merkle_blocks.py

Co-Authored-By: marcus290 <4ea57e50f269cb1118169da6f44a25b258ddc432@users.noreply.github.com>

navcoindev/navcoin-core,navcoindev/navcoin-core,navcoindev/navcoin-core,navcoindev/navcoin-core,navcoindev/navcoin-core,navcoindev/navcoin-core