Remove generated version.py file

pysr/.gitignore

@@ -0,0 +1 @@
+version.py

pysr/__init__.py

@@ -4,6 +4,8 @@ from .export_jax import sympy2jax
 from .export_torch import sympy2torch
 from .feynman_problems import FeynmanProblem, Problem
 from .sr import PySRRegressor, jl
+
+# This file is created by setuptools_scm during the build process:
 from .version import __version__
 
 __all__ = [