BLD: Remove -march=native compiler option.

- This option ended up causing problems in the CI builds of the conda
  distribution, resulting in faulty builds that crash at import of the
  package. Because this compiler option is not all that important, then
  it is safe to just remove it.

Author: zoj613

build.py

@@ -24,9 +24,7 @@
 if platform.system() == 'Windows':
     compile_args = ['/O2']
 else:
-    compile_args = ['-O2', '-std=c99', '-march=native']
-    if os.getenv("BUILD_WHEEL", None):
-        compile_args.pop()
+    compile_args = ['-O2', '-std=c99']
 
 # https://numpy.org/devdocs/reference/random/examples/cython/setup.py.html
 include_path = np.get_include()