envoy: remove unnecessary wait and log message after starting envoy

When the envoy proxy gets started by the Cilium Agent, the
message `Envoy: Sleeping for 100ms before restarting proxy` gets logged.

With the introduction of supervising the Envoy Proxy in a dedicated
go-routine, this message and the corresponding wait is somewhat
unnecessary and gets deleted with this commit.

Signed-off-by: Marco Hofstetter <marco.hofstetter@isovalent.com>

pkg/envoy/envoy.go

@@ -232,15 +232,12 @@ func StartEnvoy(stateDir, logPath string, baseID uint64) *Envoy {
 			go func() {
 				if err := cmd.Wait(); err != nil {
 					log.WithError(err).Warn("Envoy: Proxy crashed")
+					// Avoid busy loop & hogging CPU resources by waiting before restarting envoy.
+					time.Sleep(100 * time.Millisecond)
 				}
 				close(crashCh)
 			}()
 
-			// start again after a short wait. If Cilium exits this should be enough
-			// time to not start Envoy again in that case.
-			log.Info("Envoy: Sleeping for 100ms before restarting proxy")
-			time.Sleep(100 * time.Millisecond)
-
 			select {
 			case <-crashCh:
 				// Start Envoy again