lib: simplify validators

Some of the validators can be simplified by removing unnecessary
object parameters and using validators in another validators to keep
consistency.

lib/internal/validators.js

@@ -155,7 +155,7 @@ const validateObject = hideStackFrames(
     }
   });
 
-const validateArray = hideStackFrames((value, name, { minLength = 0 } = {}) => {
+const validateArray = hideStackFrames((value, name, minLength = 0) => {
   if (!ArrayIsArray(value)) {
     throw new ERR_INVALID_ARG_TYPE(name, 'Array', value);
   }
@@ -166,8 +166,7 @@ const validateArray = hideStackFrames((value, name, { minLength = 0 } = {}) => {
 });
 
 function validateSignalName(signal, name = 'signal') {
-  if (typeof signal !== 'string')
-    throw new ERR_INVALID_ARG_TYPE(name, 'string', signal);
+  validateString(signal, name);
 
   if (signals[signal] === undefined) {
     if (signals[StringPrototypeToUpperCase(signal)] !== undefined) {
@@ -199,7 +198,7 @@ function validateEncoding(data, encoding) {
 
 // Check that the port number is not NaN when coerced to a number,
 // is an integer and that it falls within the legal range of port numbers.
-function validatePort(port, name = 'Port', { allowZero = true } = {}) {
+function validatePort(port, name = 'Port', allowZero = true) {
   if ((typeof port !== 'number' && typeof port !== 'string') ||
       (typeof port === 'string' && StringPrototypeTrim(port).length === 0) ||
       +port !== (+port >>> 0) ||