Your "extra fields" appear to be, in fact, extra records as this is a list view of your data. Each row is a different record, So those records you have marked with an X should be records that you can delete:
Click in one of the fields of that row.
Select Delete Record from the Records menu.
But this does not address how those records came into existence in the first place--there could be features in your database that automatically create them.
And it may be that these are records that should not be deleted, it could be that they just need to be omitted from your visible "found set" of records--I have no way of telling just from looking at your screen shot whether this might or might not be the case here. Omit record is another option in the same Records menu.
Thanks, Impressive information. I got a solution, by hiding them by date search and I got what I want.