lib: fix linting errors

Specifically `Unused eslint-disable directive (no problems were reported
from 'jsdoc/require-returns-check')`.

Signed-off-by: Santiago Gimeno <santiago.gimeno@gmail.com>

Author: santigimeno

lib/nsolid.js

@@ -312,7 +312,6 @@ function genInfoObject(regen = false) {
   return infoObj;
 }
 
-// eslint-disable-next-line jsdoc/require-returns-check
 /**
  * It returns relevant information about the running process and platform is
  * running on.
@@ -333,7 +332,6 @@ function info(cb) {
   process.nextTick(() => cb(null, o));
 }
 
-// eslint-disable-next-line jsdoc/require-returns-check
 /**
  * It retrieves a list of enviroment and process metrics.
  * @param {MetricsCallback} cb if a callback is passed, it is used to return the metrics asynchronously