core: Remove error return from IndexingContext.revert_data_sources #11331

Job	Run time
Check rustfmt style	14s
Clippy linting	1m 52s
Build in release mode	1m 35s
Run unit tests	3m 53s
Run integration tests	3m 58s
Subgraph Runner integration tests	3m 5s
	14m 37s

Provide feedback