Update Python grpc plugin paths since grpc/grpc#39586 in 1.73.0+

Author: aaliddell

modules/core/internal/common.bzl

@@ -118,19 +118,6 @@ def python_path(s):
     """
     return s.replace("-", "_").replace(".", "/")
 
-def python_grpc_path(s):
-    """
-    Convert a path string to a python import compatible path as is generated by the python grpc plugin.
-
-    Args:
-        s (string): The input string to be converted.
-
-    Returns:
-        (string): The converted string.
-
-    """
-    return s.replace("-", "_")
-
 def php_path(s):
     """
     Convert a path string to a php path as is generated by the php plugin.
@@ -239,8 +226,6 @@ def get_output_filename(src_file, pattern, proto_info):
         filename = pattern.replace("{basename|python}", python_path(basename))
     elif "{protopath|python}" in pattern:
         filename = pattern.replace("{protopath|python}", python_path(protopath))
-    elif "{protopath|python_grpc}" in pattern:
-        filename = pattern.replace("{protopath|python_grpc}", python_grpc_path(protopath))
     elif "{basename|php}" in pattern:
         filename = pattern.replace("{basename|php}", php_path(basename))
     elif "{protopath|php}" in pattern:

modules/python/BUILD.bazel

@@ -30,7 +30,7 @@ proto_plugin(
     exclusions = [
         "google/protobuf",
     ],
-    outputs = ["{protopath|python_grpc}_pb2_grpc.py"],
+    outputs = ["{protopath|python}_pb2_grpc.py"],
     tool = "@grpc//src/compiler:grpc_python_plugin",
     visibility = ["//visibility:public"],
 )