maint: remove Python 3.8 from supported versions

Author: DimitriPapadopoulos

pyproject.toml

@@ -10,7 +10,6 @@ classifiers = [
   "Topic :: Scientific/Engineering :: Image Recognition",
   "Topic :: Scientific/Engineering :: Bio-Informatics",
   "License :: OSI Approved :: Apache Software License",
-  "Programming Language :: Python :: 3.8",
   "Programming Language :: Python :: 3.9",
   "Programming Language :: Python :: 3.10",
   "Programming Language :: Python :: 3.11",
@@ -19,7 +18,6 @@ classifiers = [
 dependencies = [
   "acres",
   "dipy >= 1.10.0",
-  'importlib_resources; python_version < "3.9"', # jinja2 imports deprecated function removed in 2.1
   "markupsafe ~= 2.0.1",
   "matplotlib",
   "migas >= 0.4.0",