fix: dont put env vars in credentials

Author: durran

src/cmap/auth/mongo_credentials.ts

@@ -134,26 +134,6 @@ export class MongoCredentials {
     this.mechanism = options.mechanism || AuthMechanism.MONGODB_DEFAULT;
     this.mechanismProperties = options.mechanismProperties || {};
 
-    if (this.mechanism.match(/MONGODB-AWS/i)) {
-      if (!this.username && process.env.AWS_ACCESS_KEY_ID) {
-        this.username = process.env.AWS_ACCESS_KEY_ID;
-      }
-
-      if (!this.password && process.env.AWS_SECRET_ACCESS_KEY) {
-        this.password = process.env.AWS_SECRET_ACCESS_KEY;
-      }
-
-      if (
-        this.mechanismProperties.AWS_SESSION_TOKEN == null &&
-        process.env.AWS_SESSION_TOKEN != null
-      ) {
-        this.mechanismProperties = {
-          ...this.mechanismProperties,
-          AWS_SESSION_TOKEN: process.env.AWS_SESSION_TOKEN
-        };
-      }
-    }
-
     if (this.mechanism === AuthMechanism.MONGODB_OIDC && !this.mechanismProperties.ALLOWED_HOSTS) {
       this.mechanismProperties = {
         ...this.mechanismProperties,