arm64: Kconfig: Remove selecting replaced HAVE_FUNCTION_GRAPH_RETVAL

arm64: Kconfig: Remove selecting replaced HAVE_FUNCTION_GRAPH_RETVAL

Commit a3ed4157b7d8 ("fgraph: Replace fgraph_ret_regs with ftrace_regs")
replaces the config HAVE_FUNCTION_GRAPH_RETVAL with the config
HAVE_FUNCTION_GRAPH_FREGS, and it replaces all the select commands in the
various architecture Kconfig files. In the arm64 architecture, the commit
adds the 'select HAVE_FUNCTION_GRAPH_FREGS', but misses to remove the
'select HAVE_FUNCTION_GRAPH_RETVAL', i.e., the select on the replaced
config.

Remove selecting the replaced config. No functional change, just cleanup.

Fixes: a3ed4157b7d8 ("fgraph: Replace fgraph_ret_regs with ftrace_regs")
Signed-off-by: Lukas Bulwahn <lukas.bulwahn@redhat.com>
Link: https://lore.kernel.org/r/20250117125522.99071-1-lukas.bulwahn@redhat.com
Signed-off-by: Will Deacon <will@kernel.org>