"trimmed off" is correct and usable in written English.
You can use it when referring to a portion of something that has been removed. For example, "The grass were trimmed off the edges of the lawn."
Britain, though, trimmed off more than 3.5sec.
All with the crusts trimmed off, supporting my theory that rich people are just little kids.
The Pie Ladies drew the line, however, at a rhubarb pie with the crust trimmed off.
Their sheaves had been washed, and their silk neatly trimmed off, but that was all that had happened to them.
This is just playing with time: most of the money trimmed off the deficit now will swell future deficits.
Having trimmed off a piece of cartilage, he slid it back into her nose, to the side of her septum.
Filtered reads were trimmed off by FASTQ Quality Trimmer from FASTX-Toolkit (http://hannonlab.cshl.edu/).edu/
Various pieces have been trimmed off to become parts of privately held Science Applications International, Avaya and Agere.
Eric trimmed off the remaining flesh above the paws, leaving the fox with two furry front feet.
Fetal membranes were trimmed off and the placenta was weighed.
Branches that constitute less than 0.1% of all population were trimmed off the tree to exclude suspicious sequences, for example, branches with less than 5 strains were trimmed off in Figure 3B.
