deps: remove stringify-package

[wraithgar]

It was not being used

[npm-robot]

no statistically significant performance changes detected

timing results

app-large	clean	lock-only	cache-only	cache-only peer-deps	modules-only	no-lock	no-cache	no-modules	no-clean	no-clean audit
npm@8	62.573 ±8.16	31.294 ±0.18	18.565 ±0.15	20.778 ±0.81	3.275 ±0.01	3.268 ±0.02	2.676 ±0.07	11.964 ±0.09	2.583 ±0.01	3.642 ±0.03
#4714	64.806 ±1.16	30.828 ±0.16	23.667 ±7.55	20.811 ±0.80	3.220 ±0.03	3.215 ±0.01	2.557 ±0.03	12.073 ±0.04	2.589 ±0.01	3.732 ±0.17

app-medium	clean	lock-only	cache-only	cache-only peer-deps	modules-only	no-lock	no-cache	no-modules	no-clean	no-clean audit
npm@8	38.931 ±2.57	24.130 ±0.03	13.493 ±0.15	14.526 ±0.14	2.890 ±0.01	2.918 ±0.02	2.572 ±0.01	9.002 ±0.06	2.423 ±0.01	3.275 ±0.00
#4714	38.814 ±0.75	24.145 ±0.02	13.752 ±0.01	14.805 ±0.27	2.925 ±0.01	2.949 ±0.06	2.583 ±0.00	9.015 ±0.00	2.431 ±0.01	3.262 ±0.03

[fritzy]

LGTM