The detail changes from old to Pro versions of Premiere, Please always say which version of Premiere you are using, since there are many big changes in some cases.
Whichever cure you choose, the result will be that all affected footage will need rendering, which takes both time and disk space.
There are two basic ways to address this issue:
1. Crop Effect. Apply to an affected clip and trim off the unwanted edge. Depending on Premiere version, you may need to tick 'zoom' to fill the frame again. If the resulting distortion is unacceptable, crop in proportion from sides and top.
2. Motion. Zoom in slightly and move the result to put the unwanted area outside the visible area.
In both cases there will be some loss of picture quality due to the zoom.
Assuming the area is constant, you can apply the same effect to multiple clips by setting it all up on one clip, COPY, selecting target clips, and then using Paste Special (Paste Attributes in later versions).
Another method which works in some cases is to export a still of a good frame, cut out the majority of the frame leaving just the good edge. Then use as an obscuring overlay on the timeline to hide the problem area. This requires a locked-off camera eg on a tripod and is useful sometimes to cover up eg microphones that stray into the top of a shot.