Revert "funding+lnwallet: ensure max_htlc_value_in_flight smaller than capacity"

This reverts commit 4aa52d267f.

It turns out that the other implementations set values for this field
which aren't based on the actual capacity of the channel. As a result,
we'll no reject most of their channel offerings, since they may offer a
value of a max `uint64` or something else hard coded that's above the
size of the channel. As a result, we're reverting this check for now to
maintain proper compatibility.

lnwallet/errors.go

@@ -132,16 +132,6 @@ func ErrNumConfsTooLarge(numConfs, maxNumConfs uint32) error {
 	}
 }
 
-// ErrMaxValueInFlightTooLarge returns an error indicating that the 'max HTLC
-// value in flight' the remote required is too large to be accepted.
-func ErrMaxValueInFlightTooLarge(maxValInFlight,
-	maxMaxValInFlight lnwire.MilliSatoshi) ReservationError {
-	return ReservationError{
-		fmt.Errorf("maxValueInFlight too large: %v, max is %v",
-			maxValInFlight, maxMaxValInFlight),
-	}
-}
-
 // ErrChanTooSmall returns an error indicating that an incoming channel request
 // was too small. We'll reject any incoming channels if they're below our
 // configured value for the min channel size we'll accept.