false inheritedDeprecation warnings for @specialized classes

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qbin/scalac -deprecation src/library/scala/Tuple*.scala
src/library/scala/Tuple1.scala:19: warning: inheritance from class Tuple1 in package scala is deprecated: Tuples will be made final in a future version.
case class Tuple1[@specialized(Int, Long, Double) +T1](_1: T1)

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Imported From: https://issues.scala-lang.org/browse/SI-7315?orig=1
Reporter: @retronym
Affected Versions: 2.11.0
See #7312

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@retronym said:
scala/scala#2336 (the PR for #7312)