Remove now-unreferenced PyRuntimeInfo.

Author: gregestren

python/private/py_executable.bzl

@@ -59,7 +59,7 @@ load(":py_cc_link_params_info.bzl", "PyCcLinkParamsInfo")
 load(":py_executable_info.bzl", "PyExecutableInfo")
 load(":py_info.bzl", "PyInfo", "VenvSymlinkKind")
 load(":py_internal.bzl", "py_internal")
-load(":py_runtime_info.bzl", "DEFAULT_STUB_SHEBANG", "PyRuntimeInfo")
+load(":py_runtime_info.bzl", "DEFAULT_STUB_SHEBANG")
 load(":reexports.bzl", "BuiltinPyInfo", "BuiltinPyRuntimeInfo")
 load(":rule_builders.bzl", "ruleb")
 load(":toolchain_types.bzl", "EXEC_TOOLS_TOOLCHAIN_TYPE", "TARGET_TOOLCHAIN_TYPE", TOOLCHAIN_TYPE = "TARGET_TOOLCHAIN_TYPE")