fix: drop cbios.txt from the MSX.emu profile

The entry cited only the bundled file and its note said no code reads it. No source file of MSX.emu names cbios.txt at the pin, so it is not a file the emulator loads.

emulators/msx-emu.yml

@@ -238,19 +238,6 @@ files:
     description: "C-BIOS MSX-MUSIC ROM, slot 3-1 from page 2"
     source_ref: "MSX.emu/res/firmware/Machines/MSX2+ - C-BIOS/config.ini:31, MSX.emu/src/blueMSX/Board/Machine.c:300-339,450-468,1168-1181, MSX.emu/src/blueMSX/Memory/romMapperMsxMusic.c:55-68"
 
-  - name: "cbios.txt"
-    path: "cbios.txt"
-    system: msx
-    required: false
-    bundled: true
-    category: game_data
-    size: 10469
-    sha1: "78ae5c049bc94ee1284536c419388b1ab7ac218c"
-    description: "C-BIOS 0.29 release notes and licence, bundled beside the machine folders"
-    note: >-
-      Shipped in the application bundle. No code reads it.
-    source_ref: "MSX.emu/res/firmware/cbios.txt"
-
   - name: "config.ini"
     path: "Machines/MSX/config.ini"
     system: msx