I have a genome of plant provided by a lab for me to assemble. This genome has Pac Bio and Illumina primer sequences that need to be removed beforehand. But I was told that some of the primers do not retain their full sequences, so instead of looking for the full sequences and trimming them out using software, they simply remove 70(?) nucleotide from both ends of every reads. Is this a better approach? And what tool would allow me to do this?