Fix kotlin code style issues

game/plugin/skills/mining/test/PickaxeTests.kt

@@ -24,7 +24,6 @@ class PickaxeTests {
         assertEquals(null, Pickaxe.bestFor(player))
     }
 
-
     @ParameterizedTest
     @EnumSource(Pickaxe::class)
     fun `The highest level pickaxe is chosen when available`(pickaxe: Pickaxe) {
@@ -43,7 +42,6 @@ class PickaxeTests {
         assertEquals(Pickaxe.BRONZE, Pickaxe.bestFor(player))
     }
 
-
     @ParameterizedTest
     @EnumSource(value = Pickaxe::class)
     fun `Pickaxes can be chosen from equipment as well as inventory`(pickaxe: Pickaxe) {
@@ -53,7 +51,6 @@ class PickaxeTests {
         assertEquals(pickaxe, Pickaxe.bestFor(player))
     }
 
-
     @ParameterizedTest
     @EnumSource(value = Pickaxe::class)
     fun `Pickaxes with a level requirement higher than the player's are ignored`(pickaxe: Pickaxe) {
@@ -73,5 +70,4 @@ class PickaxeTests {
             ItemDefinition(it.id).apply { isStackable = false }
         }
     }
-
 }