Revert "Add build_overrides/pigweed_environment.gni (#19430)" (#19559)
Revert "Add build_overrides/pigweed_environment.gni (#19430)" (#19559)

This reverts commit c1e1d018820c0fdd51f124f607b9207f31fae2ff.

build_overrides.gni is automatically created by bootstrea.sh
(specifically
third_party/pigweed/repo/pw_env_setup/py/pw_env_setup/env_setup.py)
project-chip/connectedhomeip,nestlabs/connectedhomeip,nestlabs/connectedhomeip,project-chip/connectedhomeip,project-chip/connectedhomeip,project-chip/connectedhomeip,project-chip/connectedhomeip,nestlabs/connectedhomeip,nestlabs/connectedhomeip,nestlabs/connectedhomeip,nestlabs/connectedhomeip,nestlabs/connectedhomeip,project-chip/connectedhomeip