strips forced compilation flags

--- a/setup.py
+++ b/setup.py
@@ -4,21 +4,9 @@
 from Cython.Build import cythonize
 from setuptools import Extension, setup

-extra_compile_args = [
-    "-flto",
-    "-O3",
-    "-ffast-math",
-    "-fomit-frame-pointer",
-    "-funroll-loops",
-]
-extra_link_args = [
-    "-flto",
-    "-O3",
-    "-s",
-]
+extra_compile_args = []
+extra_link_args = []

-if shutil.which("lld") and os.environ.get("CC") == "clang":
-    extra_link_args.append("-fuse-ld=lld")

 extensions = [
     Extension(