No, you cannot remove springs. Less springs mean less pressure on the plates and will cause slipping. These are wet clutches. So, it may get easier once the plates are oiled. If you didn't do so, it is best to soak the plates in oil for at least an hour before installation. You should also lube your cable and inspect for any kinks or tears in it. Also, make sure to so the full clutch adjustment:
1 - let all slack out of the cable at the clutch lever
2 - Loosen cable adjustment where it enters the left side cover
2 - loosen the lock screw on the left side cover
3 - tighten the large clutch adjuster slot fully. Then, back it off a bit (less than 1/8 turn)
4 - tighten lock screw
5 - tighten the cable adjustment where it enters the left side cover
6 - take up any remaining cable slack using the thumb screw on the clutch lever. There should be a slight amount of free play before the lever engages the clutch
If after all of that it is still difficult to pull then you may want to invest in a new clutch cable. Honda parts are always worth the money.