Fixed unit tests & removed dead code for web3-providers-http (#5228)

[jdevcs]

Description

This PR is for e2e win tests in CI of #5228

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

Checklist:

• I have selected the correct base branch.
• I have performed a self-review of my own code.
• I have commented my code, particularly in hard-to-understand areas.
• I have made corresponding changes to the documentation.
• My changes generate no new warnings.
• Any dependent changes have been merged and published in downstream modules.
• I ran npm run dtslint with success and extended the tests and types if necessary.
• I ran npm run test:cov and my test cases cover all the lines and branches of the added code.
• I ran npm run build with success.
• I have tested the built dist/web3.min.js in a browser.
• I have tested my code on the live network.
• I have checked the Deploy Preview and it looks correct.
• I have updated the CHANGELOG.md file in the root folder.

[render]

Your Render PR Server URL is https://web3-js-pr-5264.onrender.com.

Follow its progress at https://dashboard.render.com/static/srv-cbb8f2r0tnuvdk1hmc90.

[coveralls]

Pull Request Test Coverage Report for Build 2696970239

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 443 unchanged lines in 8 files lost coverage.
• Overall coverage decreased (-2.1%) to 72.255%

---

Files with Coverage Reduction	New Missed Lines	%
packages/web3-core-requestmanager/src/jsonrpc.js	1	88.0%
packages/web3-providers-http/lib/index.js	7	77.14%
packages/web3-core-helpers/src/formatters.js	25	80.95%
packages/web3-core-helpers/src/errors.js	31	4.41%
packages/web3-utils/src/soliditySha3.js	55	5.13%
packages/web3-utils/src/index.js	62	29.31%
packages/web3-utils/src/utils.js	96	13.31%
packages/web3-eth-accounts/src/index.js	166	23.62%

Totals
Change from base Build 2678847914:	-2.1%
Covered Lines:	3402
Relevant Lines:	4432

---

💛 - Coveralls

[jdevcs]

All code changes in this PR are approved in #5228 and tests are passing so merging in 1.x