.sync: Files.yml: Cleanup CLANGPDB file sync

A mu_feature_ipmi and mu_feature_debugger do not support `stuart_setup`
and thus would error because their config was set to `both`. This commit
updates the config for these two repositories to only be `ci-setup`.

Additionally, this commit removes mu_plus from being sync'd as it
requires rust be configured. We do not plan on supporting this at this
time.

Author: Javagedes

.sync/Files.yml

@@ -646,7 +646,7 @@ group:
     repos: |
       microsoft/mu_crypto_release
 
-# Leaf Workflow - CLANGPDB Package CI (feature repos)
+# Leaf Workflow - CLANGPDB Package CI (mu_feature_config and mu_feature_dfci)
   - files:
     - source: .sync/workflows/leaf/clangpdb-ci.yml
       dest: .github/workflows/clangpdb-ci.yml
@@ -655,19 +655,27 @@ group:
         setup_cmd: both
     repos: |
       microsoft/mu_feature_config
-      microsoft/mu_feature_debugger
       microsoft/mu_feature_dfci
+
+# Leaf Workflow - CLANGPDB Package CI (mu_feature_ipmi and mu_feature_debugger)
+  - files:
+    - source: .sync/workflows/leaf/clangpdb-ci.yml
+      dest: .github/workflows/clangpdb-ci.yml
+      template:
+        branch: main
+        setup_cmd: ci-setup
+    repos: |
       microsoft/mu_feature_ipmi
+      microsoft/mu_feature_debugger
 
-# Leaf Workflow - CLANGPDB Package CI (mu_oem_sample, mu_plus)
+# Leaf Workflow - CLANGPDB Package CI (mu_oem_sample)
   - files:
     - source: .sync/workflows/leaf/clangpdb-ci.yml
       dest: .github/workflows/clangpdb-ci.yml
       template:
         setup_cmd: ci-setup
     repos: |
       microsoft/mu_oem_sample
-      microsoft/mu_plus
 
 # Leaf Workflow - CLANGPDB Package CI (mu_tiano_platforms)
   - files: