why does the over center spring have to be removed

should I remove it then? I mean , I had this McLeod 75109 put in to ease the pedal effort compared to the b and b that was in there, will the pedal go more towards the floor with the spring out? it goes down easy then at a certain point I can feel the spring start grabbing and the pedal has to be forced to near the floor. that is the purpose of that spring , pushing down , correct? so with it out the pedal should feel different? correct? thanks much