Fix mis-scaled signals for subject 030: divide by 1e6 (part 25/33 of full fix for subjects 004,005,008-035,058-060).

sourcedata/braindecode/dataset.zarr/recording_30/data/c/0/0/0

@@ -1,3 +1,3 @@
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-size 18296539
+oid sha256:e97831cc627a263b5857751d40a8b7588c7a39628a6acb69956a24d18b352145
+size 18351500

sourcedata/braindecode/dataset.zarr/recording_30/data/c/1/0/0

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:8a6bd8f2e439f59b71838aa6a358d7cab57f270dfb91146780ddebb43d9da35b
-size 11447379
+oid sha256:b7cf16fe489b74abdfbae025834e280ada6c2b18bbf6912a5e75ab104f867b40
+size 11482139