net: simplify bool expression

Simplify `!(x <= y)` to `x > y` and `!(x >= y)` to `x < y` where x,y are not defined as float.

Change-Id: Id1e5b518395d97e75f96aa4ac5d6c0ee990c0e7d
Reviewed-on: https://go-review.googlesource.com/c/140337
Run-TryBot: Mikio Hara <mikioh.mikioh@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Mikio Hara <mikioh.mikioh@gmail.com>

src/net/dial_test.go

@@ -318,9 +318,9 @@ func TestDialParallel(t *testing.T) {
 
 		expectElapsedMin := tt.expectElapsed - 95*time.Millisecond
 		expectElapsedMax := tt.expectElapsed + 95*time.Millisecond
-		if !(elapsed >= expectElapsedMin) {
+		if elapsed < expectElapsedMin {
 			t.Errorf("#%d: got %v; want >= %v", i, elapsed, expectElapsedMin)
-		} else if !(elapsed <= expectElapsedMax) {
+		} else if elapsed > expectElapsedMax {
 			t.Errorf("#%d: got %v; want <= %v", i, elapsed, expectElapsedMax)
 		}
 
@@ -418,10 +418,10 @@ func TestDialerFallbackDelay(t *testing.T) {
 		}
 		expectMin := tt.expectElapsed - 1*time.Millisecond
 		expectMax := tt.expectElapsed + 95*time.Millisecond
-		if !(elapsed >= expectMin) {
+		if elapsed < expectMin {
 			t.Errorf("#%d: got %v; want >= %v", i, elapsed, expectMin)
 		}
-		if !(elapsed <= expectMax) {
+		if elapsed > expectMax {
 			t.Errorf("#%d: got %v; want <= %v", i, elapsed, expectMax)
 		}
 	}