Automated rollback of commit 1824a5548e56ecd337687ff32baf98e37ddd6b16.

*** Reason for rollback ***

Breaks Bazel tests

*** Original change description ***

Add `--sun-misc-unsafe-memory-access=allow` to `JavaBuilder`'s jvm flags

Fixes https://github.com/bazelbuild/rules_java/issues/348

PiperOrigin-RevId: 868102114
Change-Id: If58378b00718c8ca3a04d2559801c8540c006ad6

test/toolchains/BUILD.bazel

diff --git a/test/toolchains/BUILD.bazel b/test/toolchains/BUILD.bazel
index 24ae535..e25b3d8 100644
--- a/test/toolchains/BUILD.bazel
+++ b/test/toolchains/BUILD.bazel
@@ -1,8 +1,7 @@
 load(":bootclasspath_tests.bzl", "bootclasspath_tests")
-load(":default_java_toolchain_tests.bzl", "default_java_toolchain_tests")
 
 package(default_applicable_licenses = ["@rules_java//:license"])
 
-bootclasspath_tests(name = "bootclasspath_tests")
-
-default_java_toolchain_tests(name = "default_java_toolchain_tests")
+bootclasspath_tests(
+    name = "bootclasspath_tests",
+)

test/toolchains/default_java_toolchain_tests.bzl

diff --git a/test/toolchains/default_java_toolchain_tests.bzl b/test/toolchains/default_java_toolchain_tests.bzl
deleted file mode 100644
index bdfa400..0000000
--- a/test/toolchains/default_java_toolchain_tests.bzl
+++ /dev/null
@@ -1,30 +0,0 @@
-"""Tests for the default java toolchain configuration"""
-
-load("@rules_testing//lib:analysis_test.bzl", "analysis_test", "test_suite")
-load("@rules_testing//lib:util.bzl", "util")
-load("//java:java_library.bzl", "java_library")
-
-def _test_java_builder_jvm_flags(name):
-    util.helper_target(
-        java_library,
-        name = name + "/lib",
-        srcs = ["A.java"],
-    )
-    analysis_test(
-        name = name,
-        impl = _test_java_builder_jvm_flags_impl,
-        target = name + "/lib",
-    )
-
-def _test_java_builder_jvm_flags_impl(env, target):
-    env.expect.that_target(target).action_named("Javac").contains_flag_values([
-        ("--sun-misc-unsafe-memory-access", "allow"),
-    ])
-
-def default_java_toolchain_tests(name):
-    test_suite(
-        name = name,
-        tests = [
-            _test_java_builder_jvm_flags,
-        ],
-    )

toolchains/default_java_toolchain.bzl

diff --git a/toolchains/default_java_toolchain.bzl b/toolchains/default_java_toolchain.bzl
index df53468..f4f83f6 100644
--- a/toolchains/default_java_toolchain.bzl
+++ b/toolchains/default_java_toolchain.bzl
@@ -103,8 +103,6 @@
     # targeting JDK 7.
     java_runtime = Label("//toolchains:remotejdk_21"),
     oneversion = Label("//toolchains:one_version"),
-    # TODO: remove after https://github.com/protocolbuffers/protobuf/issues/20760 is fixed
-    javabuilder_jvm_opts = ["--sun-misc-unsafe-memory-access=allow"],
 )
 
 DEFAULT_TOOLCHAIN_CONFIGURATION = _BASE_TOOLCHAIN_CONFIGURATION