Fix Front Mission db entries.

data/resources/database/gamedb.json

@@ -151990,9 +151990,7 @@
   "serial": "SLPM-87330",
   "name": "Front Mission 1st (Japan) (Front Mission History)",
   "codes": [
-   "SLPM-87330",
-   "SLPM-87331",
-   "SLPM-87332"
+   "SLPM-87330"
   ],
   "languages": [
    "Japanese"
@@ -152040,9 +152038,10 @@
   ]
  },
  {
-  "serial": "SLPM-87397",
+  "serial": "SLPM-87331",
   "name": "Front Mission 2 (Japan) (Front Mission History)",
   "codes": [
+   "SLPM-87331",
    "SLPM-87397"
   ],
   "languages": [
@@ -152050,7 +152049,7 @@
   ],
   "publisher": "Squaresoft",
   "developer": "Squaresoft",
-  "releaseDate": "2006-10-05",
+  "releaseDate": "2003-12-11",
   "genre": "Tactical RPG",
   "minPlayers": 1,
   "maxPlayers": 1,
@@ -152152,9 +152151,10 @@
   ]
  },
  {
-  "serial": "SLPM-87399",
+  "serial": "SLPS-02222",
   "name": "Front Mission 3 (Japan)",
   "codes": [
+   "SLPM-87332",
    "SLPM-87399",
    "SLPS-02222",
    "SLPS-02772",
@@ -152165,7 +152165,7 @@
   ],
   "publisher": "Squaresoft",
   "developer": "Squaresoft",
-  "releaseDate": "2006-10-05",
+  "releaseDate": "1999-09-03",
   "genre": "Tactical RPG",
   "minPlayers": 1,
   "maxPlayers": 1,