The ornamental design for a light trim, as shown and described.
FIG. 1 is a perspective view of a light trim showing my new design;
FIG. 2 is a first side elevational view thereof;
FIG. 3 is a second side elevational view thereof;
FIG. 4 is a third side elevational view thereof;
FIG. 5 is a fourth side elevational view thereof;
FIG. 6 is a top plan view thereof; and,
FIG. 7 is a bottom plan view thereof.
The broken lines shown in the drawings are included for the purpose of illustrating elements of the light trim that is attachable to a light fixture and form no part of the claimed design. The portions of the light trim between the paired break lines in the disclosure form no part of the claimed design.