Remove manylinux2014 support for ITK 6

manylinux2014 is not needed for ITK 6. Remove the manylinux2014 image
tag resolution, the manylinux1/manylinux2014 pixi-to-pattern renaming
entries, and update shell script comments to reference _2_28 and _2_34
as the supported manylinux versions.

Addresses review feedback from @thewtex on PR #302.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: hjmjohnson

scripts/dockcross-manylinux-build-module-wheels.sh

@@ -79,7 +79,7 @@ if [[ "${TARGET_ARCH}" == "aarch64" ]]; then
   IMAGE_TAG=${IMAGE_TAG:-2025.08.12-1}
   CONTAINER_SOURCE=${CONTAINER_SOURCE:-"quay.io/pypa/manylinux${MANYLINUX_VERSION}_${TARGET_ARCH}:${IMAGE_TAG}"}
 else
-  # if x64 arch then supported manylinux versions are _2_28 and 2014
+  # if x64 arch then supported manylinux versions are _2_28 and _2_34
   IMAGE_TAG=${IMAGE_TAG:=20260203-3dfb3ff}
   CONTAINER_SOURCE=${CONTAINER_SOURCE:-"docker.io/dockcross/manylinux${MANYLINUX_VERSION}-${TARGET_ARCH}:${IMAGE_TAG}"}
 fi

scripts/dockcross-manylinux-build-wheels.sh

@@ -41,7 +41,7 @@ if [[ "${TARGET_ARCH}" == "aarch64" ]]; then
   IMAGE_TAG=${IMAGE_TAG:=2025.08.12-1}
   CONTAINER_SOURCE=${CONTAINER_SOURCE:="quay.io/pypa/manylinux${MANYLINUX_VERSION}_${TARGET_ARCH}:${IMAGE_TAG}"}
 else
-  # if x64 arch then supported manylinux versions are _2_28 and 2014
+  # if x64 arch then supported manylinux versions are _2_28 and _2_34
   IMAGE_TAG=${IMAGE_TAG:=20260203-3dfb3ff}
   CONTAINER_SOURCE=${CONTAINER_SOURCE:="docker.io/dockcross/manylinux${MANYLINUX_VERSION}-${TARGET_ARCH}:${IMAGE_TAG}"}
 fi

scripts/wheel_builder_utils.py

@@ -582,7 +582,7 @@ def default_manylinux(
     Parameters
     ----------
     manylinux_version : str
-        Manylinux specification (e.g. ``'_2_28'``, ``'2014'``).
+        Manylinux specification (e.g. ``'_2_28'``, ``'_2_34'``).
     os_name : str
         Operating system name (only ``'linux'`` triggers resolution).
     arch : str
@@ -612,8 +612,6 @@ def default_manylinux(
             image_tag = image_tag or "20250913-6ea98ba"
         elif arch == "aarch64" and manylinux_version == "_2_28":
             image_tag = image_tag or "2025.08.12-1"
-        elif manylinux_version == "2014":
-            image_tag = image_tag or "20240304-9e57d2b"
         elif manylinux_version == "":
             image_tag = ""
         else:
@@ -735,8 +733,6 @@ def get_default_platform_build(default_python_version: str = "py311") -> str:
     from_pixi = os.environ.get("PIXI_ENVIRONMENT_NAME", None)
     if from_pixi and "-" in from_pixi:
         manylinux_pixi_to_pattern_renaming: dict[str, str] = {
-            "manylinux1": "manylinux1",
-            "manylinux2014": "manylinux2014",
             "manylinux228": "manylinux_2_28",
             "manylinux234": "manylinux_2_34",
         }