Auto merge of #22546 - atouchet:tidy, r=jdm

Update servo-tidy.toml

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rand no longer has a dependency on itself since 0.3 was removed in #22388.

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servo-tidy.toml

@@ -21,7 +21,6 @@ rand = [
   "ipc-channel",
   "parking_lot_core",
   "phf_generator",
-  "rand",
   "servo_rand",
   "smithay-client-toolkit",
   "tempfile",