Remove obsolete algo interface to Numba (#2647)

The PR cleans up the code and remove the obsolete interface from DPNP to
Numba JIT.

Author: antonwolfy

.flake8

@@ -55,7 +55,6 @@ exclude =
     benchmarks/*.py,
     build,
     dpnp/_version.py,
-    dpnp/to_numba/*.py,
     conda.recipe,
     dpnp/tests/*.py,
     tests_external/*.py,

CHANGELOG.md

@@ -30,6 +30,7 @@ Also, that release drops support for Python 3.9, making Python 3.10 the minimum
 ### Removed
 
 * Dropped support for Python 3.9 [#2626](https://github.com/IntelPython/dpnp/pull/2626)
+* Removed the obsolete interface from DPNP to Numba JIT [#2647](https://github.com/IntelPython/dpnp/pull/2647)
 
 ### Fixed