rm validation and the corresponding test

config.go

@@ -538,8 +538,6 @@ func (c *Config) Validate() error {
 		return ConfigurationError("Net.ReadTimeout must be > 0")
 	case c.Net.WriteTimeout <= 0:
 		return ConfigurationError("Net.WriteTimeout must be > 0")
-	case c.Net.KeepAlive < 0:
-		return ConfigurationError("Net.KeepAlive must be >= 0")
 	case c.Net.SASL.Enable:
 		if c.Net.SASL.Mechanism == "" {
 			c.Net.SASL.Mechanism = SASLTypePlaintext

config_test.go

@@ -67,11 +67,6 @@ func TestNetConfigValidates(t *testing.T) {
 				cfg.Net.WriteTimeout = 0
 			},
 			"Net.WriteTimeout must be > 0"},
-		{"KeepAlive",
-			func(cfg *Config) {
-				cfg.Net.KeepAlive = -1
-			},
-			"Net.KeepAlive must be >= 0"},
 		{"SASL.User",
 			func(cfg *Config) {
 				cfg.Net.SASL.Enable = true