Fix LocationUtil#getSafeDestination NSME on older versions (#4708)

Fixes a NoSuchMethodError from old guava versions in old MC versions.

Fixes #4703

Author: JRoy

Essentials/src/main/java/com/earth2me/essentials/utils/LocationUtil.java

@@ -1,7 +1,6 @@
 package com.earth2me.essentials.utils;
 
 import com.earth2me.essentials.IEssentials;
-import com.google.common.primitives.Ints;
 import net.ess3.api.IUser;
 import org.bukkit.GameMode;
 import org.bukkit.Location;
@@ -232,12 +231,12 @@ public static Location getSafeDestination(IEssentials ess, final Location loc) t
             i++;
             if (i >= VOLUME.length) {
                 x = origX;
-                y = Ints.constrainToRange(origY + RADIUS, worldMinY, worldMaxY);
+                y = NumberUtil.constrainToRange(origY + RADIUS, worldMinY, worldMaxY);
                 z = origZ;
                 break;
             }
             x = origX + VOLUME[i].x;
-            y = Ints.constrainToRange(origY + VOLUME[i].y, worldMinY, worldMaxY);
+            y = NumberUtil.constrainToRange(origY + VOLUME[i].y, worldMinY, worldMaxY);
             z = origZ + VOLUME[i].z;
         }
         while (isBlockUnsafe(ess, world, x, y, z)) {

Essentials/src/main/java/com/earth2me/essentials/utils/NumberUtil.java

@@ -119,4 +119,11 @@ public static boolean isPositiveInt(final String sInt) {
         }
         return Integer.parseInt(sInt) > 0;
     }
+
+    /**
+     * Backport from Guava.
+     */
+    public static int constrainToRange(int value, int min, int max) {
+        return Math.min(Math.max(value, min), max);
+    }
 }