…crypto/call

Remove deprecated calls in `webrtc/call.ts`

* feat(legacy crypto!): remove legacy crypto export in `matrix.ts`

* test(legacy crypto): update `megolm-backup.spec.ts` to import directly `CryptoApi`

…-legacy-crypto

# Conflicts:
#	spec/TestClient.ts
#	spec/integ/crypto/cross-signing.spec.ts
#	spec/integ/crypto/crypto.spec.ts
#	spec/integ/crypto/megolm-backup.spec.ts
#	spec/integ/crypto/olm-encryption-spec.ts
#	spec/integ/crypto/to-device-messages.spec.ts
#	spec/integ/crypto/verification.spec.ts
#	spec/integ/matrix-client-methods.spec.ts
#	spec/integ/matrix-client-syncing.spec.ts
#	spec/unit/crypto.spec.ts
#	spec/unit/crypto/DeviceList.spec.ts
#	spec/unit/crypto/algorithms/megolm.spec.ts
#	spec/unit/crypto/algorithms/olm.spec.ts
#	spec/unit/crypto/backup.spec.ts
#	spec/unit/crypto/cross-signing.spec.ts
#	spec/unit/crypto/crypto-utils.ts
#	spec/unit/crypto/outgoing-room-key-requests.spec.ts
#	spec/unit/crypto/secrets.spec.ts
#	spec/unit/crypto/verification/InRoomChannel.spec.ts
#	spec/unit/crypto/verification/sas.spec.ts
#	spec/unit/crypto/verification/secret_request.spec.ts
#	spec/unit/crypto/verification/util.ts
#	spec/unit/crypto/verification/verification_request.spec.ts
#	spec/unit/embedded.spec.ts
#	spec/unit/matrix-client.spec.ts
#	spec/unit/models/event.spec.ts
#	spec/unit/room.spec.ts
#	src/client.ts
#	src/common-crypto/CryptoBackend.ts
#	src/crypto/CrossSigning.ts
#	src/crypto/DeviceList.ts
#	src/crypto/EncryptionSetup.ts
#	src/crypto/OlmDevice.ts
#	src/crypto/OutgoingRoomKeyRequestManager.ts
#	src/crypto/RoomList.ts
#	src/crypto/SecretSharing.ts
#	src/crypto/SecretStorage.ts
#	src/crypto/algorithms/base.ts
#	src/crypto/algorithms/megolm.ts
#	src/crypto/algorithms/olm.ts
#	src/crypto/api.ts
#	src/crypto/backup.ts
#	src/crypto/dehydration.ts
#	src/crypto/device-converter.ts
#	src/crypto/deviceinfo.ts
#	src/crypto/index.ts
#	src/crypto/keybackup.ts
#	src/crypto/olmlib.ts
#	src/crypto/store/base.ts
#	src/crypto/store/indexeddb-crypto-store-backend.ts
#	src/crypto/store/indexeddb-crypto-store.ts
#	src/crypto/store/localStorage-crypto-store.ts
#	src/crypto/store/memory-crypto-store.ts
#	src/crypto/verification/Base.ts
#	src/crypto/verification/IllegalMethod.ts
#	src/crypto/verification/QRCode.ts
#	src/crypto/verification/SAS.ts
#	src/crypto/verification/request/Channel.ts
#	src/crypto/verification/request/InRoomChannel.ts
#	src/crypto/verification/request/ToDeviceChannel.ts
#	src/crypto/verification/request/VerificationRequest.ts
#	src/embedded.ts
#	src/models/event.ts
#	src/sync.ts