Removed asyncdispatch.newAsyncNativeSocket, was deprecated since 0.18 (#14854)

Co-authored-by: Andreas Rumpf <rumpf_a@web.de>

changelog.md

@@ -185,6 +185,7 @@ proc mydiv(a, b): int {.raises: [].} =
 
 - Added the `thiscall` calling convention as specified by Microsoft, mostly for hooking purpose
 - Deprecated `{.unroll.}` pragma, was ignored by the compiler anyways, was a nop.
+- Removed `asyncdispatch.newAsyncNativeSocket`, was deprecated since `0.18`.
 - Remove `dom.releaseEvents` and `dom.captureEvents`, was deprecated.
 
 ## Compiler changes

lib/pure/asyncdispatch.nim

@@ -1640,16 +1640,6 @@ proc createAsyncNativeSocket*(domain: Domain = Domain.AF_INET,
                               inheritable = defined(nimInheritHandles)): AsyncFD =
   createAsyncNativeSocketImpl(domain, sockType, protocol, inheritable)
 
-proc newAsyncNativeSocket*(domain: cint, sockType: cint,
-    protocol: cint): AsyncFD {.deprecated: "use createAsyncNativeSocket instead".} =
-  createAsyncNativeSocketImpl(domain, sockType, protocol)
-
-proc newAsyncNativeSocket*(domain: Domain = Domain.AF_INET,
-                           sockType: SockType = SOCK_STREAM,
-                           protocol: Protocol = IPPROTO_TCP): AsyncFD
-                           {.deprecated: "use createAsyncNativeSocket instead".} =
-  createAsyncNativeSocketImpl(domain, sockType, protocol)
-
 when defined(windows) or defined(nimdoc):
   proc bindToDomain(handle: SocketHandle, domain: Domain) =
     # Extracted into a separate proc, because connect() on Windows requires