I would be very careful to check that they are in fact caps: there are a couple of resistors in this area as well. However, I have found them on early 2As, so it could be yours is one of them. Removing them is not difficult but requires a fine iron and PATIENCE to get them off without damaging anything else. The FAQ is quite good on this topic and can be relied upon (as can the whole FAQ, to be honest, thanks to the Master of the FAQ.

As a point of note, I found that a number of customers reported that earth loop hum reduced drastically after their removal. This was the case on 5 seperate machines that I repaired and serviced (according to my notes).