Fix Array.delete

Author: gdotdesign

source/Array.mint

@@ -261,7 +261,7 @@ module Array {
     Array.delete("a", ["a", "b", "c"]) == ["b", "c"]
   */
   fun delete (what : a, array : Array(a)) : Array(a) {
-    reject((item : a) : Bool => { item != what }, array)
+    reject((item : a) : Bool => { item == what }, array)
   }
 
   /*

tests/Array.mint

@@ -550,3 +550,16 @@ suite "Array.groupsOf" {
     }
   }
 }
+
+suite "Array.delete" {
+  test "it removes the item" {
+    Array.delete("a", [
+      "a",
+      "b",
+      "c"
+    ]) == [
+      "b",
+      "c"
+    ]
+  }
+}