Removed excessive blank lines

plugins/p1-meter/rulesets/p1_voltage.py

@@ -15,7 +15,6 @@ from cmk.rulesets.v1.rule_specs import (
     Topic,
 )
 
-
 def _parameter_form():
     return Dictionary(
         title=Title("P1 voltage thresholds"),
@@ -39,7 +38,6 @@ def _parameter_form():
         },
     )
 
-
 rule_spec_p1_voltage = CheckParameters(
     name="p1_voltage",
     title=Title("P1 voltage"),