Drop 32-bit linux builds

Scipy no longer provides 32-bit wheels

Author: djhoese

.github/workflows/deploy.yaml

@@ -42,10 +42,6 @@ jobs:
             os: ubuntu-latest
             python-version: 3.8
             docker-image: manylinux2014_x86_64
-          - name: manylinux 32-bit
-            os: ubuntu-latest
-            python-version: 3.8
-            docker-image: manylinux2014_i686
 
     steps:
       - uses: actions/checkout@v2

setup.py

@@ -72,7 +72,7 @@
           packages=['geotiepoints'],
           # packages=find_packages(),
           setup_requires=['numpy', 'cython'],
-          python_requires='>=3.6',
+          python_requires='>=3.7',
           cmdclass=cmdclass,
           install_requires=requirements,
           ext_modules=cythonize(EXTENSIONS),