Integrated: 8311215: [BACKOUT] JDK-8047998 Abort the vm if MaxNewSize is not the same as NewSize when MaxHeapSize is the same as InitialHeapSize

[Daniel D. Daugherty]

This reverts commit 8abb9f590f844d098b156b719499bb0447f99759.

Two tests are failing many times in Tier2 after [JDK-8047998](https://bugs.openjdk.org/browse/JDK-8047998): 

  10 gc/arguments/TestNewSizeFlags.java 
  10 gc/arguments/TestVerifyBeforeAndAfterGCFlags.java 

so 20 failures per Tier2. 

Three tests are failing many times in Tier3 after [JDK-8047998](https://bugs.openjdk.org/browse/JDK-8047998): 

   4 compiler/runtime/Test8010927.java 
   6 jdk/jfr/event/gc/detailed/TestPromotionFailedEventWithDefNew.java 
   6 jdk/jfr/event/gc/detailed/TestPromotionFailedEventWithParallelScavenge.java 

so 16 failures per Tier3.

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Commit messages:
 - Revert "8047998: Abort the vm if MaxNewSize is not the same as NewSize when MaxHeapSize is the same as InitialHeapSize"

Changes: https://git.openjdk.org/jdk/pull/14747/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=14747&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8311215
  Stats: 7 lines in 1 file changed: 0 ins; 4 del; 3 mod
  Patch: https://git.openjdk.org/jdk/pull/14747.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/14747/head:pull/14747

PR: https://git.openjdk.org/jdk/pull/14747