Chore: use local function to append "s" instead of a package (#11293)

This matches the way other formatters handle pluralization, which
seems simple enough to not require an additional package.

lib/formatters/table.js

@@ -9,13 +9,22 @@
 //------------------------------------------------------------------------------
 
 const chalk = require("chalk"),
-    table = require("table").table,
-    pluralize = require("pluralize");
+    table = require("table").table;
 
 //------------------------------------------------------------------------------
 // Helpers
 //------------------------------------------------------------------------------
 
+/**
+ * Given a word and a count, append an "s" if count is not one.
+ * @param {string} word A word.
+ * @param {number} count Quantity.
+ * @returns {string} The original word with an s on the end if count is not one.
+ */
+function pluralize(word, count) {
+    return (count === 1 ? word : `${word}s`);
+}
+
 /**
  * Draws text table.
  * @param {Array<Object>} messages Error messages relating to a specific file.
@@ -129,10 +138,10 @@ module.exports = function(report) {
 
     result += `\n${table([
         [
-            chalk.red(pluralize("Error", errorCount, true))
+            chalk.red(pluralize(`${errorCount} Error`, errorCount))
         ],
         [
-            chalk.yellow(pluralize("Warning", warningCount, true))
+            chalk.yellow(pluralize(`${warningCount} Warning`, warningCount))
         ]
     ], {
         columns: {

package.json

@@ -64,7 +64,6 @@
     "natural-compare": "^1.4.0",
     "optionator": "^0.8.2",
     "path-is-inside": "^1.0.2",
-    "pluralize": "^7.0.0",
     "progress": "^2.0.0",
     "regexpp": "^2.0.1",
     "semver": "^5.5.1",