Revert "Issue 67308179: add support for getting credentials from env vars (#73)"

This reverts commit 7cf460615ea64c67058c16341b42a8594ec9bfd4.

init.go

diff --git a/init.go b/init.go
index 5118b47..b7f470e 100644
--- a/init.go
+++ b/init.go
@@ -83,6 +83,7 @@
 	config.SetDefault(configPollInterval, 120*time.Second)
 	config.SetDefault(configSnapshotProtocol, "sqlite")
 	config.SetDefault(configDiagnosticMode, false)
+
 	name, errh := os.Hostname()
 	if (errh != nil) && (len(config.GetString(configName)) == 0) {
 		log.Errorf("Not able to get hostname for kernel. Please set '%s' property in config", configName)
@@ -179,15 +180,6 @@
 		isOfflineMode = true
 	}
 
-	if val, ok := os.LookupEnv(configConsumerKey); ok {
-		config.Set(configConsumerKey, val)
-		log.Debug("Got consumer key from env vars")
-	}
-	if val, ok := os.LookupEnv(configConsumerSecret); ok {
-		config.Set(configConsumerSecret, val)
-		log.Debug("Got consumer secret from env vars")
-	}
-
 	err := checkForRequiredValues()
 	if err != nil {
 		return err