MAINT: Fix numpy req

setup.py

@@ -23,9 +23,7 @@
     except ImportError:
         raise ImportError("tempita required to install, use pip install tempita")
 
-with open("requirements.txt") as f:
-    setup_required = f.read().splitlines()
-install_required = [pkg for pkg in setup_required if "numpy" in pkg]
+install_required = ["numpy >= 1.17"]
 
 CYTHON_COVERAGE = os.environ.get("RANDOMGEN_CYTHON_COVERAGE", "0") in (
     "true",
@@ -386,6 +384,5 @@ def is_pure(self):
     ],
     zip_safe=False,
     install_requires=install_required,
-    setup_requires=setup_required,
     python_requires=">=3.6",
 )