Api: disable only plunger when reading eeprom (#1198)
Api: disable only plunger when reading eeprom (#1198)

* disable just the plunger motor when reading/writing with pipette eeprom

* to truly avoid all noise, both BC axis, and no others, must be turned off

Opentrons/labware,OpenTrons/opentrons-api,OpenTrons/opentrons-api,OpenTrons/opentrons-api,OpenTrons/opentrons_sdk,OpenTrons/opentrons-api,OpenTrons/opentrons-api