Tests

Remove `MatrixClient.initLegacyCrypto` #10761

Job	Run time
Run Complement Crypto tests	0s
Downstream test element-web	0s
Jest [integ] (Node lts/*)	2m 16s
Jest [integ] (Node 22)	2m 21s
Jest [unit] (Node lts/*)	1m 29s
Jest [unit] (Node 22)	1m 30s
Downstream tests	1s
Downstream Complement Crypto tests	1s
Jest tests	1s
	7m 39s

Provide feedback