Disable ReturnValueIgnored checks to unblock java_tools release (baze…

…lbuild#15559)

New checks added since the last release break //tools/android/...

Re-enabling this is being tracked in bazelbuild#15219

PiperOrigin-RevId: 441198376

Co-authored-by: hvd <hvd@google.com>

tools/jdk/default_java_toolchain.bzl

@@ -51,8 +51,8 @@ DEFAULT_JAVACOPTS = [
  "-XDcompilePolicy=simple",
  "-g",
  "-parameters",
- # https://github.com/bazelbuild/java_tools/issues/51#issuecomment-927940699
- "-XepOpt:ReturnValueIgnored:ObjectMethods=false",
+ # https://github.com/bazelbuild/bazel/issues/15219
+ "-Xep:ReturnValueIgnored:OFF",
 ]
 
 # java_toolchain parameters without specifying javac, java.compiler,