rabbit_exchange_parameters, rabbit_runtime_parameters: Remove unused imports

Author: dumbbell

src/rabbit_exchange_parameters.erl

@@ -23,8 +23,6 @@
 -export([register/0]).
 -export([validate/5, notify/5, notify_clear/4]).
 
--import(rabbit_misc, [pget/2]).
-
 -rabbit_boot_step({?MODULE,
                    [{description, "exchange parameters"},
                     {mfa, {rabbit_exchange_parameters, register, []}},

src/rabbit_runtime_parameters.erl

@@ -95,7 +95,7 @@
 
 %%---------------------------------------------------------------------------
 
--import(rabbit_misc, [pget/2, pset/3]).
+-import(rabbit_misc, [pget/2]).
 
 -define(TABLE, rabbit_runtime_parameters).