powerpc/module: Remove unused .ftrace.tramp section

.ftrace.tramp section is not used for any purpose. This code was added
all the way back in the original commit introducing support for dynamic
ftrace on ppc64 modules. Remove it.

Signed-off-by: Naveen N Rao <naveen@kernel.org>
Reviewed-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/9cf6d7f37ba82f7cb6dafecf660f44925c526d8d.1687166935.git.naveen@kernel.org

Author: rnav

arch/powerpc/include/asm/module.h

@@ -75,10 +75,6 @@ struct mod_arch_specific {
 #endif
 
 #ifdef CONFIG_DYNAMIC_FTRACE
-#    ifdef MODULE
-	asm(".section .ftrace.tramp,\"ax\",@nobits; .align 3; .previous");
-#    endif	/* MODULE */
-
 int module_trampoline_target(struct module *mod, unsigned long trampoline,
 			     unsigned long *target);
 int module_finalize_ftrace(struct module *mod, const Elf_Shdr *sechdrs);