[dev.typeparams] cmd/compile: remove outdate TODO in escape analysis

We now understand the root cause of #47227, it will be fixed in #47317.

Change-Id: Ifcd44f887a0bd3195818df33e409bd3e818e0b27
Reviewed-on: https://go-review.googlesource.com/c/go/+/336610
Trust: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Run-TryBot: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Go Bot <gobot@golang.org>

src/cmd/compile/internal/escape/call.go

@@ -320,8 +320,6 @@ func (e *escape) rewriteArgument(argp *ir.Node, init *ir.Nodes, call ir.Node, fn
 			return
 		case ir.ONAME:
 			if arg.(*ir.Name).Class == ir.PFUNC {
-				// TODO(cuonglm): figure it why this is necessary, we should not depend on this to make
-				//                ABI analyze works correctly (see #47227 and discussion in CL 334882).
 				return
 			}
 		}