RFR: 8283587: [BACKOUT] Invalid generic signature for redefined classes

[Alex Menkov]

The change reverts the fix for JDK-8282241 which causes regression

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Commit messages:
 - Revert "8282241: Invalid generic signature for redefined classes"

Changes: https://git.openjdk.java.net/jdk/pull/7934/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=7934&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8283587
  Stats: 212 lines in 2 files changed: 7 ins; 202 del; 3 mod
  Patch: https://git.openjdk.java.net/jdk/pull/7934.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/7934/head:pull/7934

PR: https://git.openjdk.java.net/jdk/pull/7934