[Test] Removed obsolete node test from run_tests.py (grpc#35525)

I guess we don't need Node in run_tests.py any more?

Closes grpc#35525

COPYBARA_INTEGRATE_REVIEW=grpc#35525 from veblush:node-x 0572935
PiperOrigin-RevId: 599874102

tools/run_tests/run_tests.py

@@ -606,81 +606,6 @@ def __str__(self):
         return self.lang_suffix
 
 
-# This tests Node on grpc/grpc-node and will become the standard for Node testing
-class RemoteNodeLanguage(object):
-    def __init__(self):
-        self.platform = platform_string()
-
-    def configure(self, config, args):
-        self.config = config
-        self.args = args
-        # Note: electron ABI only depends on major and minor version, so that's all
-        # we should specify in the compiler argument
-        _check_compiler(
-            self.args.compiler,
-            [
-                "default",
-                "node0.12",
-                "node4",
-                "node5",
-                "node6",
-                "node7",
-                "node8",
-                "electron1.3",
-                "electron1.6",
-            ],
-        )
-        if self.args.compiler == "default":
-            self.runtime = "node"
-            self.node_version = "8"
-        else:
-            if self.args.compiler.startswith("electron"):
-                self.runtime = "electron"
-                self.node_version = self.args.compiler[8:]
-            else:
-                self.runtime = "node"
-                # Take off the word "node"
-                self.node_version = self.args.compiler[4:]
-
-    # TODO: update with Windows/electron scripts when available for grpc/grpc-node
-    def test_specs(self):
-        if self.platform == "windows":
-            return [
-                self.config.job_spec(
-                    ["tools\\run_tests\\helper_scripts\\run_node.bat"]
-                )
-            ]
-        else:
-            return [
-                self.config.job_spec(
-                    ["tools/run_tests/helper_scripts/run_grpc-node.sh"],
-                    None,
-                    environ=_FORCE_ENVIRON_FOR_WRAPPERS,
-                )
-            ]
-
-    def pre_build_steps(self):
-        return []
-
-    def build_steps(self):
-        return []
-
-    def build_steps_environ(self):
-        """Extra environment variables set for pre_build_steps and build_steps jobs."""
-        return {}
-
-    def post_tests_steps(self):
-        return []
-
-    def dockerfile_dir(self):
-        return "tools/dockerfile/test/node_jessie_%s" % _docker_arch_suffix(
-            self.args.arch
-        )
-
-    def __str__(self):
-        return "grpc-node"
-
-
 class Php7Language(object):
     def configure(self, config, args):
         self.config = config
@@ -1327,7 +1252,6 @@ def __str__(self):
 _LANGUAGES = {
     "c++": CLanguage("cxx", "c++"),
     "c": CLanguage("c", "c"),
-    "grpc-node": RemoteNodeLanguage(),
     "php7": Php7Language(),
     "python": PythonLanguage(),
     "ruby": RubyLanguage(),
@@ -1756,8 +1680,6 @@ def _build_and_run(
         "pypy3",
         "python_alpine",
         "all_the_cpythons",
-        "electron1.3",
-        "electron1.6",
         "coreclr",
         "cmake",
         "cmake_ninja_vs2019",