Revert "For CI - still exclude tool building for PR build on AppVeyor."

This reverts commit d7bae3aef829be4428ba59672cbf0366006a11c3.

.appveyor.yml

@@ -64,7 +64,6 @@ before_build:
   - ps: $env:COMMIT_MESSAGE = $(git log --format=%B -n 1 $env:APPVEYOR_REPO_COMMIT)
   - rake ci_setup_cache
 build_script:
-  - ps: if ($env:APPVEYOR_PULL_REQUEST_NUMBER) { $env:URHO3D_TOOLS = "0" }
   - rake ci && if "%PACKAGE_UPLOAD%" == "1" rake ci_package_upload && move Build\*.zip . && rd /S /Q Build\_CPack_Packages
   - rake ci_timer
 after_build: rake ci_teardown_cache

Rakefile

@@ -449,7 +449,7 @@ desc 'Teardown build cache'
 task :ci_teardown_cache do
   # AppVeyor on Windows host has different kind of cache mechanism, not based on ccache
   if ENV['APPVEYOR']
-    system "bash -c 'rm -rf #{ENV['build_tree']}/{bin,Source/Urho3D/tolua++-prefix/src/tolua++-build/bin}'"
+    # No-op for now
     next
   # Upload cache to internal cache store if it is our own
   elsif ENV['USE_CCACHE'].to_i == 2