Remove coveralls from requirements.txt

e69f2d0a · Brandon T. Willard · Brandon T. Willard · 767e44e8 · e69f2d0a
--- a/requirements.txt
+++ b/requirements.txt
@@ -7,7 +7,6 @@ black>=20.8b1
 pytest-cov>=2.6.1
 coverage>=5.1
 pytest
-coveralls
 cython
 sympy
 versioneer