Remove dev and main branch from workflows. (#404)

* Remove `dev` and `main` branch from workflows.

Update links in documentation.

Signed-off-by: David Galiffi <David.Galiffi@amd.com>

* `amd-staging` -> `amd-mainline` in docs

Signed-off-by: Peter Jun Park <peter.park@amd.com>

---------

Signed-off-by: David Galiffi <David.Galiffi@amd.com>
Signed-off-by: Peter Jun Park <peter.park@amd.com>
Co-authored-by: Peter Jun Park <peter.park@amd.com>

docs/tutorial/includes/vector-memory-operation-counting.rst

@@ -623,7 +623,7 @@ manner. See
 for further reading on this instruction type.
 
 We develop a `simple
-kernel <https://github.com/ROCm/omniperf/blob/dev/sample/stack.hip>`__
+kernel <https://github.com/ROCm/omniperf/blob/amd-mainline/sample/stack.hip>`__
 that uses stack memory:
 
 .. code-block:: cpp

docs/tutorial/profiling-by-example.rst

@@ -7,7 +7,7 @@ Profiling by example
 ********************
 
 The following examples refer to sample :doc:`HIP <hip:index>` code located in
-:fab:`github` :dev-sample:`ROCm/omniperf/blob/dev/sample <>` and distributed
+:fab:`github` :dev-sample:`ROCm/omniperf/blob/amd-mainline/sample <>` and distributed
 as part of Omniperf.
 
 .. include:: ./includes/valu-arithmetic-instruction-mix.rst