[AppVeyor] Actually disable tests

.appveyor.yml

@@ -32,7 +32,7 @@ install:
   - xb setup
 
 build_script:
-  - xb build --target=src\xenia-app --target=tests\xenia-cpu-ppc-tests --target=src\xenia-vfs-dump
+  - xb build --target=src\xenia-app --target=src\xenia-vfs-dump
 
 after_build:
   - |-
@@ -42,14 +42,9 @@ after_build:
       7z a ..\..\..\..\xenia-vfs-dump-%appveyor_repo_branch%.zip ..\..\..\..\LICENSE xenia-vfs-dump.exe
       cd ..\..\..\..
 
-before_test:
-  - xb gentests
-
-test_script:
-  - xb test --no_build
+test: off
 
 artifacts:
-  - path: xenia-cpu-ppc-test.log
   - path: xenia-$(appveyor_repo_branch).zip
   - path: xenia-vfs-dump-$(appveyor_repo_branch).zip