[jdk11u-dev] RFR: 8211905: Remove multiple casts for EM06 file

[Goetz Lindenmaier]

I backport this for parity with 11.0.14-oracle.

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Commit messages:
 - Backport 11da699d9eacd17bb955b3ee5a299134f56bb4c2

Changes: https://git.openjdk.java.net/jdk11u-dev/pull/659/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk11u-dev&pr=659&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8211905
  Stats: 2 lines in 1 file changed: 0 ins; 1 del; 1 mod
  Patch: https://git.openjdk.java.net/jdk11u-dev/pull/659.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk11u-dev pull/659/head:pull/659

PR: https://git.openjdk.java.net/jdk11u-dev/pull/659