Index: dialin/common/msg_defs.py
===================================================================
diff -u -rdf58df8b4e8b8d3f0b0764deda9f15050a071d78 -r3f9979775d1bbc365527122af16325b9aeb8b4c2
--- dialin/common/msg_defs.py	(.../msg_defs.py)	(revision df58df8b4e8b8d3f0b0764deda9f15050a071d78)
+++ dialin/common/msg_defs.py	(.../msg_defs.py)	(revision 3f9979775d1bbc365527122af16325b9aeb8b4c2)
@@ -104,6 +104,4 @@
     START_POS_FIELD_19 = END_POS_FIELD_18
     END_POS_FIELD_19 = START_POS_FIELD_19 + 4
     START_POS_FIELD_20 = END_POS_FIELD_19
-    END_POS_FIELD_20 = START_POS_FIELD_20 + 4
-
-
+    END_POS_FIELD_20 = START_POS_FIELD_20 + 4
\ No newline at end of file
Index: dialin/hd/buttons.py
===================================================================
diff -u -r20659ffd56482b0596253aa0f1f1a7eda1221945 -r3f9979775d1bbc365527122af16325b9aeb8b4c2
--- dialin/hd/buttons.py	(.../buttons.py)	(revision 20659ffd56482b0596253aa0f1f1a7eda1221945)
+++ dialin/hd/buttons.py	(.../buttons.py)	(revision 3f9979775d1bbc365527122af16325b9aeb8b4c2)
@@ -29,12 +29,6 @@
     Hemodialysis Device (HD) Dialin API sub-class for button related commands.
     """
 
-    START_POS_POWEROFF = DenaliMessage.PAYLOAD_START_INDEX
-    END_POS_POWEROFF_STATUS = START_POS_POWEROFF + 2
-
-    PRESSED = 1
-    RELEASED = 0
-
     def __init__(self, can_interface: DenaliCanMessenger, logger: Logger):
         """
         HD_Buttons constructor
Index: tests/test_calibration.py
===================================================================
diff -u -r20659ffd56482b0596253aa0f1f1a7eda1221945 -r3f9979775d1bbc365527122af16325b9aeb8b4c2
--- tests/test_calibration.py	(.../test_calibration.py)	(revision 20659ffd56482b0596253aa0f1f1a7eda1221945)
+++ tests/test_calibration.py	(.../test_calibration.py)	(revision 3f9979775d1bbc365527122af16325b9aeb8b4c2)
@@ -212,11 +212,4 @@
 
     # test_hd_calibration_record()
     # test_hd_service_record()
-    # test_hd_system_record()
-
-
-
-
-
-
-
+    # test_hd_system_record()
\ No newline at end of file