[F] Fix #16

src/main/java/icu/samnyan/aqua/sega/chusan/model/userdata/UserPlaylog.java

@@ -162,12 +162,6 @@ public class UserPlaylog implements Serializable, IGenericGamePlaylog {
         return playerRating;
     }
 
-    @NotNull
-    @Override
-    public String getDate() {
-        return playDate.toString();
-    }
-
     @Override
     public int getBeforeRating() {
         return playerRating; // TODO: Get before rating

src/main/java/icu/samnyan/aqua/sega/maimai2/model/userdata/UserPlaylog.java

@@ -265,12 +265,6 @@ public class UserPlaylog implements Serializable, IGenericGamePlaylog {
     @JsonProperty("extBool1")
     private boolean extBool1;
 
-    @NotNull
-    @Override
-    public Object getDate() {
-        return playDate;
-    }
-
     @Override
     public boolean isFullCombo() {
         return maxCombo == totalCombo;

src/main/java/icu/samnyan/aqua/sega/ongeki/model/userdata/UserPlaylog.java

@@ -160,12 +160,6 @@ public class UserPlaylog implements Serializable, IGenericGamePlaylog {
 
     private int battlePoint;
 
-    @NotNull
-    @Override
-    public Object getDate() {
-        return playDate;
-    }
-
     @Override
     public int getAchievement() {
         return techScore;