Condition focused builds generally ignore condition removal. To them, it's largely irrelevant, the new stack is coming every cast and crit and most conditions are short term. I didn't ever notice condition removals mattering at all with either of builds below.
I still remember trying out this for minion build against pretty much everything:
http://www.gw2tools.com/skills#n;app...aaa;cbZa;bWXeY
It was hilarious. 1v1 I don't think I lost to anyone simply because of the sheer number of "oh shit" buttons available combined with ridiculous survivability of minion leeches and abilities. A great example is that warrior uber attack where he snares you in place with bolas and then unloads 3 bar adrenal followed by greatsword multistrike skill. Only as bolas me and starts the adrenal, my golem smashes into him throwing him across the battlefield away from me and then sits on him keeping him permanently crippled for rest of the fight, regardless of condition removals unless he pops the immunity ult.
As well as this for less survivability and absolutely hilarious condition spam:
http://www.gw2tools.com/skills#n;ppf...aaa;cbYX;ZUcbb
But I was too fragile without minion support, so I preferred MM with conditions over this. That said, it was literally "what condition removal?" build, since you just didn't care what enemy does with conditions you spam on him, you just slapped a new stack in a matter of next cast even if something got removed. I hit 25 bleed stacks on target enemy in addition to my own poison and potentially enemy burning more then once with the signet and that just melts people faster then snowball being thrown into blast furnace. That said, your survival counted too much on applying weakness and blind at proper times, and I wasn't good enough at telling what other people were doing to time it right most of the time.
Worth noting that most necros I've met played some variation of MM build, and I don't think many people realised the power of self-harming condition skills in conjunction with consume conditions and plague signet.