Remove use of hooks from IAR

Aparantely I missed this previously

Author: theotherjimmy

tools/toolchains/iar.py

@@ -188,9 +188,6 @@ def assemble(self, source, object, includes):
         # Build assemble command
         cmd = self.asm + self.get_compile_options(self.get_symbols(True), includes, True) + ["-o", object, source]
 
-        # Call cmdline hook
-        cmd = self.hook.get_cmdline_assembler(cmd)
-
         # Return command array, don't execute
         return [cmd]
 
@@ -204,9 +201,6 @@ def compile(self, cc, source, object, includes):
 
         cmd.extend(["-o", object, source])
 
-        # Call cmdline hook
-        cmd = self.hook.get_cmdline_compiler(cmd)
-
         return [cmd]
 
     def compile_c(self, source, object, includes):
@@ -223,9 +217,6 @@ def link(self, output, objects, libraries, lib_dirs, mem_map):
         if mem_map:
             cmd.extend(["--config", mem_map])
 
-        # Call cmdline hook
-        cmd = self.hook.get_cmdline_linker(cmd)
-
         if self.RESPONSE_FILES:
             # Split link command to linker executable + response file
             cmd_linker = cmd[0]