PR #61229: [Linaro:ARM_CI] Drop building with Python 3.8 as not suppo…

…rted

Imported from GitHub PR tensorflow/tensorflow#61229

Python 3.8 is no longer supported so drop attempts to build using it.
Copybara import of the project:

--
6391b8edb33283390522fffd02b349d3a49c6327 by Andrew Goodbody <[email protected]>:

[Linaro:ARM_CI] Drop building with Python 3.8 as not supported

Python 3.8 is no longer supported so drop attempts to build
using it.

Merging this change closes #61229

PiperOrigin-RevId: 547199249

tools/toolchains/cpus/aarch64/aarch64_compiler_configure.bzl

@@ -34,7 +34,6 @@ def aarch64_compiler_configure():
     ml2014_tf_aarch64_configs(
         name_container_map = {
             "ml2014_aarch64": "docker://localhost/tensorflow-build-aarch64",
-            "ml2014_aarch64-python3.8": "docker://localhost/tensorflow-build-aarch64:latest-python3.8",
             "ml2014_aarch64-python3.9": "docker://localhost/tensorflow-build-aarch64:latest-python3.9",
             "ml2014_aarch64-python3.10": "docker://localhost/tensorflow-build-aarch64:latest-python3.10",
             "ml2014_aarch64-python3.11": "docker://localhost/tensorflow-build-aarch64:latest-python3.11",
@@ -72,7 +71,6 @@ def aarch64_compiler_configure():
     ml2014_tf_aarch64_configs(
         name_container_map = {
             "ml2014_clang_aarch64": "docker://localhost/tensorflow-build-aarch64",
-            "ml2014_clang_aarch64-python3.8": "docker://localhost/tensorflow-build-aarch64:latest-python3.8",
             "ml2014_clang_aarch64-python3.9": "docker://localhost/tensorflow-build-aarch64:latest-python3.9",
             "ml2014_clang_aarch64-python3.10": "docker://localhost/tensorflow-build-aarch64:latest-python3.10",
             "ml2014_clang_aarch64-python3.11": "docker://localhost/tensorflow-build-aarch64:latest-python3.11",