Revert "Added http2 extras to httpx explicitly"

This reverts commit a5287a0.

Author: sacOO7

pyproject.toml

@@ -33,10 +33,10 @@ python = "^3.7"
 methoddispatch = "^3.0.2"
 msgpack = "^1.0.0"
 httpx = [
-  { version = "^0.24.1", python = "~3.7", extras= ["http2"] },
-  { version = "^0.25.0", python = "^3.8", extras= ["http2"] },
+  { version = "^0.24.1", python = "~3.7" },
+  { version = "^0.25.0", python = "^3.8" },
 ]
-#h2 = "^4.1.0" # required for httx package, HTTP2 communication
+h2 = "^4.1.0" # required for httx package, HTTP2 communication
 
 # Optional dependencies
 pycrypto = { version = "^2.6.1", optional = true }