@Larry3215 is bang on on all points, but ill try and back up with some specifics and more info just because i have played with these bulbs and breaking them down. Looks like very similar power boards and parts to the Philips 8-14w led bulbs found at HomeDepot.
First if you have time, cheap aluminum channel or other heatsinks on hand, and wire and soldering iron all warmed up, its definitely an option like larry mentioned on how about going about doing it.
Bulbs wise linearity i threw a note sheet about these out a couple weeks back but it had details i had written down through my testing..... might be on another forum..... one sec...
sweet alright, first as stated if you wanted to remove the power board all together your gonna need a separate ballast to light these things a CC ballast at least "constant current".
Just to go right back to basics so as to level out confusion for possible others reading in the future. The built in power boards are there to power the leds, but they convert to usable power that the leds can use from what we get at the wall such as 120v-220v AC "alternating current" depending on where we are in the world. This 120vac transmission power need to be converted to DC power "direct current" to allow our leds to work.
Saying that i grabbed numbers for what was needed for the bulbs i broke down, but the 8w soft white bulbs ran at around 60vdc and 125ma, the bigger 14w Softwhites ran at around 86vdc and 150ma.
So say you made a parallel array of how ever many lights you have lets define it as "N" your ballast would need to supply at least that 86v and (Nx150ma) for the 14w versions, so say 10 bulbs thats 1.5amps, 30 bulbs 4.5amps, very few easily found ballast out there "laptop" will even fit in that range of say 86+vdc and home ever many amps you need.
So easy thing is just to use the prebuild ballasts that already come with the light, just requires 4 sides of every light to be wired depending on how they are mounter or remotely mounted with "proper" gauge wire to our points, AC "In" Hot and Neutral, and the DC side "output" positive and negative sides.
So that all aside lets talk about how many bulbs you should be running. Going general consensus is you should have between 35-50w of actual power per sqft for space with screw in led bulbs. For your 3x3 space with say going on the low end thats around 315w or 22 bulbs worth of those 14-15watters.
So if you already have the bulbs bonus, but if you can find the sockets above at same prices its really only around $50 out the door for them, and obviously if you need more bulbs that price goes up, wood frame and wiring excluded.
anyways can discuss this later, was starting to ramble on