setup: remove zip_safe, no one uses eggs anymore

Modern wheels are installed unpacked.

setup.cfg

@@ -1,10 +1,4 @@
 [easy_install]
-# Tahoe-LAFS actually does work at least as well as any package works when
-# zipped, but zipping eggs causes various problems
-# (http://bugs.python.org/setuptools/issue33 ), and generally makes it harder
-# for people to get at the source code, and doesn't actually provide any
-# benefits that I am aware of.
-zip_ok=False
 
 # Tahoe-LAFS depends upon several libraries (foolscap, twisted, pycryptopp,
 # zfec, and others). Left to its own devices, setuptools will look on PyPI for

setup.py

@@ -275,6 +275,5 @@ setup(name=APPNAME,
                     },
       setup_requires=setup_requires,
       entry_points = { 'console_scripts': [ 'tahoe = allmydata.scripts.runner:run' ] },
-      zip_safe=False, # We prefer unzipped for easier access.
       **setup_args
       )