fix: drop pce system card regions, an option picks

emulators/beetle_pce.yml

@@ -23,7 +23,6 @@ notes: >
 files:
   - name: "syscard3.pce"
     description: "CD-ROM System Card 3.0 (Japan)"
-    region: [japan]
     required: true
     sha1: "79f5ff55dd10187c7fd7b8daab0b3ffbd1f56a2c"
     md5: "38179df8f4ac870017db21ebcbf53114"
@@ -32,7 +31,6 @@ files:
 
   - name: "syscard3u.pce"
     description: "CD-ROM System Card 3.0 (US / TurboGrafx-CD)"
-    region: [north-america]
     required: false
     sha1: "d02611d99921986147c753df14c7349b31d71950"
     md5: "0754f903b52e3b3342202bdafb13efa5"
@@ -41,7 +39,6 @@ files:
 
   - name: "syscard2.pce"
     description: "CD-ROM System Card 2.0 (Japan)"
-    region: [japan]
     required: false
     sha1: "88da02e2503f7c32810f5d93a34849d470742b6d"
     md5: "3cdd6614a918616bfc41c862e889dd79"
@@ -50,7 +47,6 @@ files:
 
   - name: "syscard2u.pce"
     description: "CD-ROM System Card 2.0 (US / TurboGrafx-CD)"
-    region: [north-america]
     required: false
     sha1: "2bea3dac98f84b2f2f469fa77ea720b8770d598d"
     md5: "94279f315e8b52904f65ab3108542afe"
@@ -59,7 +55,6 @@ files:
 
   - name: "syscard1.pce"
     description: "CD-ROM System Card 1.0 (Japan)"
-    region: [japan]
     required: false
     sha1: "a39a66da7de6ba94ab84d04eef7afeec7d4ee66a"
     md5: "2b7ccb3d86baa18f6402c176f3065082"
@@ -68,7 +63,6 @@ files:
 
   - name: "gexpress.pce"
     description: "Games Express CD Card"
-    region: [japan]
     required: false
     sha1: "014881a959e045e00f4db8f52955200865d40280"
     md5: "6d2cb14fc3e1f65ceb135633d1694122"