Remove duplicate is_prime related functions

[paulosgf]

Fixes (#5434)

• Update ciphers.rabin_miller.py
  maths.miller_rabin.py

Describe your change:

Remove duplicate is_prime related functions

• Add an algorithm?
• Fix a bug or typo in an existing algorithm?
• Documentation change?

Checklist:

• I have read CONTRIBUTING.md.
• This pull request is all my own work -- I have not plagiarized.
• I know that pull requests will not be merged if they fail the automated tests.
• This PR only changes one algorithm file. To ease review, please open separate PRs for separate algorithms.
• All new Python files are placed inside an existing directory.
• All filenames are in all lowercase characters with no spaces or dashes.
• All functions and variable names follow Python naming conventions.
• All function parameters and return values are annotated with Python type hints.
• All functions have doctests that pass the automated testing.
• All new algorithms have a URL in its comments that points to Wikipedia or other similar explanation.
• If this pull request resolves one or more open issues then the commit message contains Fixes: #{$ISSUE_NO}.

[paulosgf]

Hi @Kush1101!
Can you verify my PR, please!

[paulosgf]

Hi @Kush1101!

Can you review my PR #5892, please?

[paulosgf]

@poyea, I solved the pro-commit hook problem and I'm submitting the changes that you requested, for review now.

[paulosgf]

@poyea, I guess that we have the egg and chicken problem here... This pre-commit workflow is breaking on this definition primes: list[int] = [] and returns this error:

pyupgrade................................................................Passed flake8...................................................................Passed mypy.....................................................................Failed - hook id: mypy - exit code: 1 project_euler/problem_007/sol2.py:76: error: "list" is not subscriptable, use "typing.List" instead Found 1 error in 1 file (checked 1 source file) codespell................................................................Passed Validate filenames......................................................Skipped 

Then, when I change the code, the pyupgrade module revert it to the original and the flake8 module returns the same error:

pyupgrade................................................................Failed - hook id: pyupgrade - duration: 2.83s - exit code: 1 - files were modified by this hook Rewriting project_euler/problem_007/sol2.py flake8...................................................................Failed - hook id: flake8 - duration: 9.87s - exit code: 1 project_euler/problem_007/sol2.py:14:1: F401 'typing.List' imported but unused 

But I didn't even need to move this part. When I fixed the other files, this new problem has arisen.
What now?

[poyea]

@paulosgf Let's check if this works?

[paulosgf]

Yes, @poyea! Now it's Ok to merge.
Awaiting approval!

[poyea]

Thank you for your pull request!🤩