From db8571414e01b7451790c54450f90aa875cbd180 Mon Sep 17 00:00:00 2001
From: Nathan Baker <nathanandrewbaker@gmail.com>
Date: Sat, 23 May 2020 13:11:38 -0700
Subject: [PATCH] Convert classmethod to staticmethod.

Addresses https://github.com/jensengroup/propka-3.1/pull/40#discussion_r429570235
and https://github.com/jensengroup/propka-3.1/pull/40#discussion_r429570322
---
 propka/bonds.py | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/propka/bonds.py b/propka/bonds.py
index f8f5e03..d77645b 100644
--- a/propka/bonds.py
+++ b/propka/bonds.py
@@ -377,8 +377,8 @@ class BondMaker:
                     except KeyError:
                         pass
 
-    @classmethod
-    def has_bond(cls, atom1, atom2):
+    @staticmethod
+    def has_bond(atom1, atom2):
         """Look for bond between two atoms.
 
         Args:
@@ -391,8 +391,8 @@ class BondMaker:
             return True
         return False
 
-    @classmethod
-    def make_bond(cls, atom1, atom2):
+    @staticmethod
+    def make_bond(atom1, atom2):
         """Makes a bond between atom1 and atom2
 
         Args: