Bazel: Simplify java 11 toolchain definition
Bazel: Simplify java 11 toolchain definition

Per default the attributes of default_java_toolchain macro is set to
correct values, so that we don't need to specify them.

Moreover, a new Bazel release could set new values, so that own values
would override the default values and thus revert them. This is the case
with default_java_toolchain.misc attribute. During Error Prone upgrade,
a new option was added -XepOpt:ReturnValueIgnored:ObjectMethods=true,
but overridden in our own impementation, see: [1],[2].

This is a preparation change to update Bazel version to 5.x release.

[1] https://github.com/bazelbuild/bazel/issues/14587
[2] https://github.com/bazelbuild/bazel/issues/14589

Change-Id: Ib7986555c3dabacc17db11cc7787b526fb31012b

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