preinstall: drop Oracle 10.2.0.3, defer to runtime enforcer for 11.2

10.2.0.3 was being installed into every Standard/CMM/Genspect/Keyence/
WaxAndTrace/Display image at build time. Oracle 11.2 is now installed
and version-enforced at runtime by the GE-Enforce common manifest
entry (Install-Oracle11r2.cmd), so baking 10.2 into the image creates
drift: 10.2 on disk, 11.2 expected by registry. Remove from preinstall.json
and drop the flat installer from sync-preinstall.sh so new builds come
up clean and the enforcer does the install on first boot.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

playbook/sync-preinstall.sh

@@ -53,7 +53,6 @@ TREE_SUBDIRS=(
 # Individual files copied flat (basename only) into installers/.
 FLAT_INSTALLERS=(
     "machineapps/UDC_Setup.exe"
-    "globalassets/oracleclient/Oracle 10.2.0.3.msi"
 )
 
 # --- Helpers ---