Remove anyio from runtime dependencies

Author: pquentin

setup.py

@@ -53,7 +53,6 @@
         "urllib3>=1.26.2, <3",
         "certifi",
         "sniffio",
-        "anyio",
     ],
     python_requires=">=3.8",
     extras_require={
@@ -72,6 +71,7 @@
             "opentelemetry-api",
             "opentelemetry-sdk",
             "orjson",
+            "anyio",
             "trio",
             # Override Read the Docs default (sphinx<2)
             "sphinx>2",