Remove compatibility check from amalgamation binary.

Any public interface should not be marked incompatible, since the @system_python repository is specific to *this* workspace.  Downstream users can name it whatever they want or use a hermetic python build, in which case this repository won't be defined.

PiperOrigin-RevId: 492103118

bazel/BUILD

@@ -30,10 +30,6 @@ licenses(["notice"])
 py_binary(
     name = "amalgamate",
     srcs = ["amalgamate.py"],
-    target_compatible_with = select({
-        "@system_python//:exists": [],
-        "//conditions:default": ["@platforms//:incompatible"],
-    }),
     visibility = ["//:__pkg__"],
 )