[coreboot-gerrit] [S] Change in coreboot[main]: tree: Drop unused <stdlib.h>

[Yidi Lin (Code Review)]

Attention is currently required from: Arthur Heymans, Christian Walter, Elyes Haouas, Hung-Te Lin, Jincheng Li, Johnny Lin, Jonathan Zhang, Lean Sheng Tan, Patrick Rudolph, Tim Chu, Yu-Ping Wu.

Yidi Lin has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/81819?usp=email )

Change subject: tree: Drop unused <stdlib.h>
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Patch Set 2: Code-Review+2