TrustM: Fix python script building issues.

Build command: scripts/build/build_examples.py --no-log-timestamps --target infineon-psoc6-lock-trustm build

Author: ankk-css

src/platform/Infineon/crypto/trustm/BUILD.gn

@@ -24,8 +24,6 @@ if (chip_crypto == "platform") {
 
 source_set("public_headers") {
   sources = [
-    "CHIPCryptoPAL.h",
-    "OperationalKeystore.h",
   ]
 
   public_deps = [

src/platform/Infineon/crypto/trustm/DeviceAttestationCredsExampleTrustM.cpp

@@ -16,8 +16,6 @@
  */
 
 #include "DeviceAttestationCredsExampleTrustM.h"
-#include <credentials/examples/ExampleDACs.h>
-#include <credentials/examples/ExamplePAI.h>
 #include <crypto/CHIPCryptoPAL.h>
 #include <lib/core/CHIPError.h>
 #include <lib/support/Span.h>