Remove last_reset_type and convert all those sensors to TOTAL_INCREASING

[jesserockz]

What does this implement/fix?

This PR removes the recently added last_reset_type and replaces all sensors that were using state_class: MEASUREMENT + last_reset_type with state_class: TOTAL_INCREASING.

The resetting is now handled in home assistant automatically.

Breaking

This is a breaking change for any templates sensors, or sensors where users have added last_reset_type in YAML manually.

This is also a breaking change for any custom components using sensor.sensor_schema(...) or sensor.SENSOR_SCHEMA as the last_reset_type argument has been removed.

Types of changes

• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Other

Related issue or feature (if applicable): fixes

Pull request in esphome-docs with documentation (if applicable): esphome/esphome-docs#1442

Test Environment

• ESP32
• ESP8266

Example entry for config.yaml:

# Example config.yaml

Checklist:

• The code change is tested and works locally.
• Tests have been added to verify that the new code works (under tests/ folder).

If user exposed functionality or configuration variables are added/changed:

• Documentation added/updated in esphome-docs.

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