wpimath: Remove floorDiv and floorMod

[auscompgeek]

These functions provide identical results to the native Python operators // and %. I've verified this is true by property testing with hypothesis.

from hypothesis import assume, given, strategies as st

int64 = st.integers(-2**63, 2**63 - 1)


@given(int64, int64)
def test_floorDiv(a, b):
    assume(b != 0)
    from wpimath import floorDiv

    output = floorDiv(a, b)
    assert output == a // b


@given(int64, int64)
def test_floorMod(a, b):
    assume(b != 0)
    from wpimath import floorMod

    output = floorMod(a, b)
    assert output == a % b

These functions are objectively worse than the native operators in two ways:

• They only accept integers that fit in a 64-bit int.
• They have worse performance (presumably due to binding overhead). I've benchmarked these functions on my laptop* against the functions in the operator module, and the native operators consistently win out from a random sample -- pytest-codspeed consistently runs almost 2x iterations of the native operators with less total runtime.

* Framework Laptop 13, AMD Ryzen 5 7640U, Fedora Linux 42, Python 3.12.11, kernel 6.16.7-200.fc42.x86_64

[virtuald]

I guess? Added it to make migration easier, would be nice if there was a way to let users know this.