Update timm import path to remove deprecation warning

[harpreetsahota204]

Fix deprecation warning by updating the timm import path from timm.models.layers to timm.layers as per the package's recommendations.

Before this change, the following deprecation warning was shown:
"Importing from timm.models.layers is deprecated, please import via timm.layers"

This PR:

• Updates the import statement to use the recommended path
• Removes the deprecation warning
• No functional changes, only import path modification

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