hooks: rename #clear to #clear_event hooks and get rid of the alias

lib/pry/hooks.rb

@@ -200,13 +200,11 @@ class Pry
     # @example
     #   my_hooks = Pry::Hooks.new.add_hook(:before_session, :say_hi) { puts "hi!" }
     #   my_hooks.delete_hook(:before_session)
-    def delete_hooks(event_name)
+    def clear_event_hooks(event_name)
       event_name = event_name.to_s
       @hooks[event_name] = []
     end
 
-    alias_method :clear, :delete_hooks
-
     # Remove all events and hooks, clearing out the Pry::Hooks
     # instance completely.
     # @example

spec/commands/watch_expression_spec.rb

@@ -14,7 +14,7 @@ describe "watch expression" do
 
   before do
     @tester = pry_tester
-    @tester.pry.hooks.clear :after_eval
+    @tester.pry.hooks.clear_event_hooks(:after_eval)
     eval "watch --delete"
   end
 

spec/hooks_spec.rb

@@ -212,7 +212,7 @@ describe Pry::Hooks do
       @hooks.add_hook(:test_hook, :my_name) { }
       @hooks.add_hook(:test_hook, :my_name2) { }
       @hooks.add_hook(:test_hook, :my_name3) { }
-      @hooks.clear(:test_hook)
+      @hooks.clear_event_hooks(:test_hook)
       expect(@hooks.hook_count(:test_hook)).to eq 0
     end
   end