Fuchsia will soon remove all support for Component Framework version 1
components (recognized by component manifests ending in `.cmx`).
Notably, some of the `flutter` tool commands for Fuchsia devices--
notably, but not limited to, those related to CFv1--are outdated, and
either do not work today or soon won't work.

This PR removes the outdated components and commands, replacing some
with the newer version, or simply removing the non-working features,
in some cases.

This reverts commit ac3c4435.

Revert "Reland "Enable caching of CPU samples collected at application startup (#89600)" (#92220)" (#92235)

This reverts commit ba0321e9.

This reverts commit dc7fea8d.

device-finder binary is being from removed from the Fuchsia SDK
in fxb/85985.

This reverts commit 5fd259be.

Fuchsia is deprecating amber_ctl and replacing it with pkgctl.
This change removes the FuchsiaAmberCtl class and replaces it
with the FuchsiaPkgctl class and updates the usages appropriately.

BUG: fxbug.dev/83865

BUG: fxbug.dev/77566
BUG: https://github.com/flutter/flutter/issues/83609

* [flutter_tools] remove mocks from fuchsia device start test

* change import