meta: remove emails from author/maintainer metadata

Since pypi/warehouse#9400 and pypi/warehouse#14813 (perhaps others too)
remain unresolved, let's keep our metadata simple. Incomplete metadata—
i.e. the email addresses this commit removes—is the only thing worse
than straight-up *incorrect* metadata. We don't want any author or
maintainer names to be attached to the wrong email addresses on the
published package page.

pyproject.toml

@@ -14,12 +14,12 @@ name = "sopel"
 version = "8.0.0"
 description = "Simple and extensible IRC bot"
 maintainers = [
-  { name="dgw", email="[email protected]" },
-  { name="Florian Strzelecki", email="[email protected]" },
+  { name="dgw" },
+  { name="Florian Strzelecki" },
 ]
 authors = [
-  { name="dgw", email="[email protected]" },
-  { name="Florian Strzelecki", email="[email protected]" },
+  { name="dgw" },
+  { name="Florian Strzelecki" },
   { name="Sean B. Palmer" },
   { name="Else Powell" },
   { name="Elad Alfassa" },