fix: untag bluemsx's national MSX ROMs

blueMSX loads a national machine only when the user picks one; the
libretro core offers generic machine types and never selects MSXJ.rom
or MSXBR.rom by territory. The 27 tags made false claims and region
drops the data directory refilled anyway.

emulators/bluemsx.yml

@@ -80,7 +80,6 @@ files:
 
   - name: MSXJ.rom
     path: "Machines/Shared Roms/MSXJ.rom"
-    region: [japan]
     size: 32768
     required: false
     system: msx
@@ -89,7 +88,6 @@ files:
 
   - name: MSXBR.rom
     path: "Machines/Shared Roms/MSXBR.rom"
-    region: [brazil]
     size: 32768
     required: false
     system: msx
@@ -97,7 +95,6 @@ files:
 
   - name: MSXFR.rom
     path: "Machines/Shared Roms/MSXFR.rom"
-    region: [france]
     size: 32768
     required: false
     system: msx
@@ -105,7 +102,6 @@ files:
 
   - name: MSXG.rom
     path: "Machines/Shared Roms/MSXG.rom"
-    region: [germany]
     size: 32768
     required: false
     system: msx
@@ -113,7 +109,6 @@ files:
 
   - name: MSXKR.rom
     path: "Machines/Shared Roms/MSXKR.rom"
-    region: [south-korea]
     size: 32768
     required: false
     system: msx
@@ -121,7 +116,6 @@ files:
 
   - name: MSXR.rom
     path: "Machines/Shared Roms/MSXR.rom"
-    region: [russia]
     size: 32768
     required: false
     system: msx
@@ -129,7 +123,6 @@ files:
 
   - name: MSXSE.ROM
     path: "Machines/Shared Roms/MSXSE.ROM"
-    region: [sweden]
     size: 32768
     required: false
     system: msx
@@ -137,7 +130,6 @@ files:
 
   - name: MSXSP.rom
     path: "Machines/Shared Roms/MSXSP.rom"
-    region: [spain]
     size: 32768
     required: false
     system: msx
@@ -152,7 +144,6 @@ files:
 
   - name: MSXR2.ROM
     path: "Machines/Shared Roms/MSXR2.ROM"
-    region: [russia]
     size: 32768
     required: false
     system: msx
@@ -160,7 +151,6 @@ files:
 
   - name: MSXHAN.rom
     path: "Machines/Shared Roms/MSXHAN.rom"
-    region: [south-korea]
     size: 8192
     required: false
     system: msx
@@ -186,7 +176,6 @@ files:
 
   - name: MSX2J.rom
     path: "Machines/Shared Roms/MSX2J.rom"
-    region: [japan]
     size: 32768
     required: false
     system: msx2
@@ -194,7 +183,6 @@ files:
 
   - name: MSX2JEXT.rom
     path: "Machines/Shared Roms/MSX2JEXT.rom"
-    region: [japan]
     size: 16384
     required: false
     system: msx2
@@ -202,7 +190,6 @@ files:
 
   - name: MSX2BR.rom
     path: "Machines/Shared Roms/MSX2BR.rom"
-    region: [brazil]
     size: 32768
     required: false
     system: msx2
@@ -210,7 +197,6 @@ files:
 
   - name: MSX2BREXT.rom
     path: "Machines/Shared Roms/MSX2BREXT.rom"
-    region: [brazil]
     size: 16384
     required: false
     system: msx2
@@ -218,7 +204,6 @@ files:
 
   - name: MSX2FR.rom
     path: "Machines/Shared Roms/MSX2FR.rom"
-    region: [france]
     size: 32768
     required: false
     system: msx2
@@ -226,7 +211,6 @@ files:
 
   - name: MSX2FREXT.rom
     path: "Machines/Shared Roms/MSX2FREXT.rom"
-    region: [france]
     size: 16384
     required: false
     system: msx2
@@ -234,7 +218,6 @@ files:
 
   - name: MSX2G.rom
     path: "Machines/Shared Roms/MSX2G.rom"
-    region: [germany]
     size: 32768
     required: false
     system: msx2
@@ -242,7 +225,6 @@ files:
 
   - name: MSX2GEXT.rom
     path: "Machines/Shared Roms/MSX2GEXT.rom"
-    region: [germany]
     size: 16384
     required: false
     system: msx2
@@ -250,7 +232,6 @@ files:
 
   - name: MSX2KR.rom
     path: "Machines/Shared Roms/MSX2KR.rom"
-    region: [south-korea]
     size: 32768
     required: false
     system: msx2
@@ -258,7 +239,6 @@ files:
 
   - name: MSX2KREXT.rom
     path: "Machines/Shared Roms/MSX2KREXT.rom"
-    region: [south-korea]
     size: 32768
     required: false
     system: msx2
@@ -266,7 +246,6 @@ files:
 
   - name: MSX2R.rom
     path: "Machines/Shared Roms/MSX2R.rom"
-    region: [russia]
     size: 32768
     required: false
     system: msx2
@@ -274,7 +253,6 @@ files:
 
   - name: MSX2REXT.rom
     path: "Machines/Shared Roms/MSX2REXT.rom"
-    region: [russia]
     size: 16384
     required: false
     system: msx2
@@ -282,7 +260,6 @@ files:
 
   - name: MSX2R2.ROM
     path: "Machines/Shared Roms/MSX2R2.ROM"
-    region: [russia]
     size: 32768
     required: false
     system: msx2
@@ -290,7 +267,6 @@ files:
 
   - name: MSX2SE.rom
     path: "Machines/Shared Roms/MSX2SE.rom"
-    region: [sweden]
     size: 32768
     required: false
     system: msx2
@@ -298,7 +274,6 @@ files:
 
   - name: MSX2SP.rom
     path: "Machines/Shared Roms/MSX2SP.rom"
-    region: [spain]
     size: 32768
     required: false
     system: msx2
@@ -306,7 +281,6 @@ files:
 
   - name: MSX2SPEXT.rom
     path: "Machines/Shared Roms/MSX2SPEXT.rom"
-    region: [spain]
     size: 16384
     required: false
     system: msx2
@@ -328,7 +302,6 @@ files:
 
   - name: MSX2HAN.rom
     path: "Machines/Shared Roms/MSX2HAN.rom"
-    region: [south-korea]
     size: 32768
     required: false
     system: msx2