Revert "[SW-219134] dynamically remove 2x content (#2173)"

This reverts commit cfb38fa.

Author: xin3he

.azure-pipelines/scripts/ut/3x/collect_log_3x.sh

@@ -22,7 +22,6 @@ $BOLD_YELLOW && echo "collect coverage for baseline" && $RESET
 cd /neural-compressor
 cp -r /neural-compressor/.azure-pipelines .azure-pipelines-pr
 git config --global --add safe.directory /neural-compressor
-git reset --hard
 git fetch
 git checkout master
 rm -rf build dist *egg-info

neural_compressor/__init__.py

@@ -17,6 +17,7 @@
 """Intel® Neural Compressor: An open-source Python library supporting popular model compression techniques."""
 from .version import __version__
 
+# we need to set a global 'NA' backend, or Model can't be used
 from .config import (
     DistillationConfig,
     PostTrainingQuantConfig,

setup.py

@@ -6,47 +6,6 @@
 
 from setuptools import find_packages, setup
 
-# Remove 2x content in "__init__.py" when only 3x is installed and recover it when 2x is installed
-content_position = ("neural_compressor/__init__.py", 20)  # file path and line number
-backup_content = """from .config import (
-    DistillationConfig,
-    PostTrainingQuantConfig,
-    WeightPruningConfig,
-    QuantizationAwareTrainingConfig,
-    MixedPrecisionConfig,
-)
-from .contrib import *
-from .model import *
-from .metric import *
-from .utils import options
-from .utils.utility import set_random_seed, set_tensorboard, set_workspace, set_resume_from
-"""
-
-
-def delete_lines_from_file(file_path, start_line):
-    """Deletes all lines from the specified start_line to the end of the file."""
-    with open(file_path, "r") as file:
-        lines = file.readlines()
-
-    # Keep only lines before the start_line
-    lines = lines[: start_line - 1]
-
-    with open(file_path, "w") as file:
-        file.writelines(lines)
-
-
-def replace_lines_from_file(file_path, start_line, replacement_content):
-    """Replaces all lines from the specified start_line to the end of the file with replacement_content."""
-    with open(file_path, "r") as file:
-        lines = file.readlines()
-
-    # Keep lines before the start_line and append replacement_content
-    lines = lines[: start_line - 1]
-    lines.append(replacement_content)
-
-    with open(file_path, "w") as file:
-        file.writelines(lines)
-
 
 def fetch_requirements(path):
     with open(path, "r") as fd:
@@ -147,13 +106,10 @@ def get_build_version():
     if "pt" in sys.argv:
         sys.argv.remove("pt")
         cfg_key = "neural_compressor_pt"
-        delete_lines_from_file(*content_position)
-    elif "tf" in sys.argv:
+
+    if "tf" in sys.argv:
         sys.argv.remove("tf")
         cfg_key = "neural_compressor_tf"
-        delete_lines_from_file(*content_position)
-    else:
-        replace_lines_from_file(*content_position, backup_content)
 
     project_name = PKG_INSTALL_CFG[cfg_key].get("project_name")
     include_packages = PKG_INSTALL_CFG[cfg_key].get("include_packages") or {}