TS0601 (AQ): Remove PM2.5 from Options (Koenkk#1734)

This device does not expose PM2.5 and is not capable of measuring PM2.5, so this option makes no sense.

Author: RubenKelevra

docs/devices/TS0601_air_quality_sensor.md

@@ -51,11 +51,6 @@ pageClass: device-page
 
 * `formaldehyd_calibration`: Calibrates the formaldehyd value (absolute offset), takes into effect on next report of device. The value must be a number.
 
-* `pm25_precision`: Number of digits after decimal point for pm25, takes into effect on next report of device. The value must be a number with a minimum value of `0` and with a with a maximum value of `3`
-
-* `pm25_calibration`: Calibrates the pm25 value (absolute offset), takes into effect on next report of device. The value must be a number.
-
-
 ## Exposes
 
 ### Temperature (numeric)