Fixed a bug where shovels took too many materials to repair

src/main/java/com/gmail/nossr50/skills/repair/repairables/SimpleRepairable.java

@@ -68,7 +68,7 @@ public class SimpleRepairable implements Repairable {
     @Override
     public int getMinimumQuantity() {
         if(minQuantity == -1)
-            return Math.max(SkillUtils.getRepairAndSalvageQuantities(itemMaterial, repairMaterial), 2);
+            return Math.max(SkillUtils.getRepairAndSalvageQuantities(itemMaterial, repairMaterial), 1);
         else
             return minQuantity;
     }