Reduce dependency set.

Remove unecssary dependencies, and depend on a non-released web3 version fixing a dependency issue.

Author: pgold

requirements.txt

@@ -1,47 +1 @@
-astroid==2.4.2
-attrs==20.1.0
-autopep8==1.5.4
-base58==2.0.1
-bitarray==1.2.2
-certifi==2020.6.20
-chardet==3.0.4
-cmake==3.18.2.post1
-cytoolz==0.10.1
-eth-abi==2.1.1
-eth-account==0.5.2
-eth-hash==0.2.0
-eth-keyfile==0.5.1
-eth-keys==0.3.3
-eth-rlp==0.1.2
-eth-typing==2.2.1
-eth-utils==1.9.4
-hexbytes==0.2.1
-idna==2.10
-ipfshttpclient==0.6.0.post1
-isort==5.4.2
-jsonschema==3.2.0
-lazy-object-proxy==1.4.3
-lru-dict==1.1.6
-mccabe==0.6.1
-multiaddr==0.0.9
-netaddr==0.8.0
-parsimonious==0.8.1
-protobuf==3.13.0
-py-solc==3.2.0
-py-solc-x==0.10.1
-pycodestyle==2.6.0
-pycryptodome==3.9.8
-pylint==2.6.0
-pyrsistent==0.16.0
-requests==2.24.0
-rlp==1.2.0
-semantic-version==2.8.5
-six==1.15.0
-solc==0.0.0a0
-toml==0.10.1
-toolz==0.10.0
-urllib3==1.25.10
-varint==1.0.2
-web3==5.12.0
-websockets==8.1
-wrapt==1.12.1
+web3 @ https://github.com/ethereum/web3.py/archive/refs/heads/v5.zip