[RELEASE ONLY CHANGES] Use release torchao for OpenVINO (#16883)

This change removes the torchao pip install from the openvino_build.sh
script for release 1.1. See #15880 as example from 1.0 release.

Author: rascani

backends/openvino/scripts/openvino_build.sh

@@ -79,11 +79,6 @@ build_python_enabled() {
 
     # Build the package
     ./install_executorch.sh --minimal
-
-    # Install torchao
-    # Note: --no-build-isolation is required because torchao's setup.py imports torch
-    # See comment in torchao's pyproject.toml for more details
-    pip install third-party/ao --no-build-isolation
 }
 
 main() {