Revert "sample: basic: blinky_pwm: Exclude rpi_pico w variant"

This reverts commit c47c37d.

Signed-off-by: Jamie McCrae <[email protected]>

Author: nordicjm

samples/basic/blinky_pwm/sample.yaml

@@ -8,4 +8,3 @@ tests:
       - pwm
     depends_on: pwm
     harness: led
-    platform_exclude: rpi_pico/rp2040/w