fix: remove duplicate license classifier from pyproject.toml and update setup.py to reference it

Author: phillipus85

pyproject.toml

@@ -17,7 +17,6 @@ classifiers = [
     "Programming Language :: Python :: 3.11",
     "Programming Language :: Python :: 3.12",
     "Development Status :: 3 - Alpha",
-    "License :: OSI Approved :: GNU General Public License v3 or later (GPLv3+)",
     "Operating System :: OS Independent",
     "Intended Audience :: Science/Research",
     "Intended Audience :: Developers",

setup.py

@@ -43,8 +43,8 @@ def read_long_description() -> str:
     url="https://github.com/DASA-Design/PyDASA",
     author="@SFAM",
     author_email="sa-artea@uniandes.edu.co",
-    # NOTE keep check classifiers!!!
-    license="GPL-3.0-or-later",
+    # NOTE: license is defined in pyproject.toml to avoid conflict
+    # license="GPL-3.0-or-later",
     classifiers=[
         "Programming Language :: Python :: 3.10",
         "Programming Language :: Python :: 3.11",