no. In fact a larger capacitor would cause additional spark energy to be grounded.
The purpose of the ignition capacitor is to reduce high frequency radio interference (static) that could be picked up by the radio. So if you were to remove the ignition capacitor it's possible to have static electrical noise induced into various electrical systems within the car. This size of the capacitor is chosen to ground the spectrum that overlaps that of broadcast radio.
Spark-gap transmitter
en.wikipedia.org