Removing iocp mentions from documentation (#692)

Author: Bloodielie

docs/deployment.md

@@ -39,7 +39,7 @@ Options:
   --workers INTEGER               Number of worker processes. Defaults to the
                                   $WEB_CONCURRENCY environment variable if
                                   available. Not valid with --reload.
-  --loop [auto|asyncio|uvloop|iocp]
+  --loop [auto|asyncio|uvloop]
                                   Event loop implementation.  [default: auto]
   --http [auto|h11|httptools]     HTTP protocol implementation.  [default:
                                   auto]

docs/index.md

@@ -90,7 +90,7 @@ Options:
   --workers INTEGER               Number of worker processes. Defaults to the
                                   $WEB_CONCURRENCY environment variable if
                                   available. Not valid with --reload.
-  --loop [auto|asyncio|uvloop|iocp]
+  --loop [auto|asyncio|uvloop]
                                   Event loop implementation.  [default: auto]
   --http [auto|h11|httptools]     HTTP protocol implementation.  [default:
                                   auto]

docs/settings.md

@@ -40,7 +40,7 @@ $ pip install uvicorn[watchgodreload]
 
 ## Implementation
 
-* `--loop <str>` - Set the event loop implementation. The uvloop implementation provides greater performance, but is not compatible with Windows or PyPy. But you can use IOCP in windows. **Options:** *'auto', 'asyncio', 'uvloop', 'iocp'.* **Default:** *'auto'*.
+* `--loop <str>` - Set the event loop implementation. The uvloop implementation provides greater performance, but is not compatible with Windows or PyPy. **Options:** *'auto', 'asyncio', 'uvloop'.* **Default:** *'auto'*.
 * `--http <str>` - Set the HTTP protocol implementation. The httptools implementation provides greater performance, but it not compatible with PyPy, and requires compilation on Windows. **Options:** *'auto', 'h11', 'httptools'.* **Default:** *'auto'*.
 * `--ws <str>` - Set the WebSockets protocol implementation. Either of the `websockets` and `wsproto` packages are supported. Use `'none'` to deny all websocket requests. **Options:** *'auto', 'none', 'websockets', 'wsproto'.* **Default:** *'auto'*.
 * `--lifespan <str>` - Set the Lifespan protocol implementation. **Options:** *'auto', 'on', 'off'.* **Default:** *'auto'*.