[Premake] Removed unused/unnecessary subprojects.

- Testing currently doesn't work
- VFS Dump is unused. You can use internal function for it
- Demos are only for fun
- Trace Dump & Trace Viewer (unsure, but ok)

You can re-enable them by changing values: enableTests and enableMiscSubprojects in main premake file.

In the future there should be xb command support to overwrite them

src/xenia/vfs/premake5.lua

@@ -7,35 +7,37 @@ project("xenia-vfs")
   kind("StaticLib")
   language("C++")
   links({
-    "xenia-base", "zstd", "zarchive"
+    "xenia-base",
+    "zstd",
+    "zarchive"
   })
   defines({
   })
---  filter({"configurations:Release", "platforms:Windows"})
---    buildoptions({
---      "/O1",
---    })
---  filter {}
 
   recursive_platform_files()
   removefiles({"vfs_dump.cc"})
 
-project("xenia-vfs-dump")
-  uuid("2EF270C7-41A8-4D0E-ACC5-59693A9CCE32")
-  kind("ConsoleApp")
-  language("C++")
-  links({
-    "fmt",
-    "xenia-base",
-    "xenia-vfs",
-  })
-  defines({})
+if enableMiscSubprojects then
+  project("xenia-vfs-dump")
+    uuid("2EF270C7-41A8-4D0E-ACC5-59693A9CCE32")
+    kind("ConsoleApp")
+    language("C++")
+    links({
+      "fmt",
+      "xenia-base",
+      "xenia-vfs",
+    })
+    defines({})
 
-  files({
-    "vfs_dump.cc",
-    project_root.."/src/xenia/base/console_app_main_"..platform_suffix..".cc",
-  })
-  resincludedirs({
-    project_root,
-  })
-include("testing")
+    files({
+      "vfs_dump.cc",
+      project_root.."/src/xenia/base/console_app_main_"..platform_suffix..".cc",
+    })
+    resincludedirs({
+      project_root,
+    })
+end
+
+if enableTests then
+  include("testing")
+end