RFR: 8232840: [TESTBUG] java/math/BigInteger/largeMemory/SymmetricRangeTests.java fails due to "OutOfMemoryError: Requested array size exceeds VM limit"

[Fernando Guallini]

SymmetricRangeTests.java was added to ProblemList as it was throwing OOM time ago. Now, tests have been executed
multiple times again with a combination of VM options with 100% pass rate, the issue could not be reproduced anymore,
it seems quite stable to be removed from the ProblemList at this time.

Required os.maxMemory has been increased as a preventive measure to run the tests only in an system where memory
available is enough to give the JVM some elbow room

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Commit messages:
 - remove SymmetricRangeTests from problemlist

Changes: https://git.openjdk.java.net/jdk/pull/432/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=432&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8232840
  Stats: 2 lines in 2 files changed: 0 ins; 1 del; 1 mod
  Patch: https://git.openjdk.java.net/jdk/pull/432.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/432/head:pull/432

PR: https://git.openjdk.java.net/jdk/pull/432