Shouldn't it be...
KIRK
WHY... is this SCRIPT... so BAD?!?
Joke aside, that's exactly what you
don't do because you're indicating delivery for the actor.
You look at all your characters and if you can simply delete one supporting character and his side shenanigans or merge his best parts with another character, then you do it.
I was so tired last night I forgot to address this. You can often combine roles into one character and make one better (and more attractive to a good actor) part out of three bit parts.
If your script is deemed too long by you (BTW there is no law that says your film needs to be 90 minutes long. If tightly written it can be 120 or more also), then you have to check your ego at the door and apply the scissors to whatever you judge as superfluous.
Running time
is an issue because every minute of running time adds to the budget because it means paying for cast and crew for more days.
On the feature I mentioned they keep asking for the script to get cut down to 100 pages or less, and right now it's 117. But it's a heist movie and the running time of those tends not to conform to the 1 page = 1 minute formula. The script for
Ocean's 11 is 148 pages, and the film runs 115 minutes, which means that script clocks in at TV norm (~45 seconds per page) instead of the movie standard. Some comedies are even crazier, especially the screwball type with rapid-fire dialog like
What's Up Doc?, which also has a 148 page script yet the film only runs 94 minutes, so it's blasting by at a wild 38 seconds per page.
An hour-long TV script for broadcast with commercials ought not to exceed 54 pages first draft, and one for a non-commercial network (like Netflix) ought not exceed 62. The pilot I just wrote I kept at commercial network length because I want to be able to shop it anywhere, and it's easier to add material than cut it (I killed a lot of darlings, but am keeping the best ones in a jar just in case).