clean up logs in init

Author: cccclai

backends/qualcomm/__init__.py

@@ -2,15 +2,9 @@
 
 from .scripts.download_qnn_sdk import install_qnn_sdk
 
-print("Running executorch/backends/qualcomm/__init__.py")
-
 env_flag = os.getenv("EXECUTORCH_BUILDING_WHEEL", "0").lower()
-print(f"[QCOM init] EXECUTORCH_BUILDING_WHEEL = {env_flag!r}")
+# If users have preinstalled QNN_SDK_ROOT, we will use it.
+qnn_sdk_root_flag = os.getenv("QNN_SDK_ROOT", None)
 
-if env_flag in ("1", "true", "yes"):
-    print(
-        "[QCOM init] EXECUTORCH_BUILDING_WHEEL is set -> skipping Qualcomm SDK install."
-    )
-else:
-    print("[QCOM init] SDK install flag not set -> installing Qualcomm SDK...")
+if not env_flag in ("1", "true", "yes") and not qnn_sdk_root_flag:
     install_qnn_sdk()