Remove custom context processors #16244

Job	Run time
Build - UI Platform	2m 9s
Filter	6s
Style [Documentation]	36s
Style [pre-commit]	42s
Tests - Full Migration [SQLite]	0s
Tests - Migrations [PostgreSQL]	0s
Tests - API Schema Documentation	4m 27s
Style - Classic UI [JS]	1m 18s
Tests - DB [SQLite] + Coverage 3.9	16m 11s
Tests - inventree-python	5m 19s
Tests - DB [MySQL]	11m 31s
Tests - DB [PostgreSQL]	12m 39s
Tests - Platform UI	0s
Security [Zizmor]	0s
Push new schema	0s
	54m 58s

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