Remove some comments about Ruby 1.9 behaviors

Author: rafaelfranca

actionpack/lib/action_dispatch/journey/gtg/transition_table.rb

@@ -109,7 +109,7 @@ def visualizer(paths, title = 'FSM')
           svg         = to_svg
           javascripts = [states, fsm_js]
 
-          # Annoying hack for 1.9 warnings
+          # Annoying hack warnings
           fun_routes  = fun_routes
           stylesheets = stylesheets
           svg         = svg

activesupport/lib/active_support/core_ext/object/duplicable.rb

@@ -19,7 +19,7 @@
 class Object
   # Can you safely dup this object?
   #
-  # False for +nil+, +false+, +true+, symbol, number and BigDecimal(in 1.9.x) objects;
+  # False for +nil+, +false+, +true+, symbol, number objects;
   # true otherwise.
   def duplicable?
     true

activesupport/lib/active_support/core_ext/time/calculations.rb

@@ -162,7 +162,7 @@ def middle_of_day
   alias :at_noon :middle_of_day
   alias :at_middle_of_day :middle_of_day
 
-  # Returns a new Time representing the end of the day, 23:59:59.999999 (.999999999 in ruby1.9)
+  # Returns a new Time representing the end of the day, 23:59:59.999999
   def end_of_day
     change(
       :hour => 23,
@@ -179,7 +179,7 @@ def beginning_of_hour
   end
   alias :at_beginning_of_hour :beginning_of_hour
 
-  # Returns a new Time representing the end of the hour, x:59:59.999999 (.999999999 in ruby1.9)
+  # Returns a new Time representing the end of the hour, x:59:59.999999
   def end_of_hour
     change(
       :min => 59,
@@ -195,7 +195,7 @@ def beginning_of_minute
   end
   alias :at_beginning_of_minute :beginning_of_minute
 
-  # Returns a new Time representing the end of the minute, x:xx:59.999999 (.999999999 in ruby1.9)
+  # Returns a new Time representing the end of the minute, x:xx:59.999999
   def end_of_minute
     change(
       :sec => 59,

activesupport/lib/active_support/dependencies.rb

@@ -421,7 +421,7 @@ def autoloadable_module?(path_suffix)
     end
 
     def load_once_path?(path)
-      # to_s works around a ruby1.9 issue where String#starts_with?(Pathname)
+      # to_s works around a ruby issue where String#starts_with?(Pathname)
       # will raise a TypeError: no implicit conversion of Pathname into String
       autoload_once_paths.any? { |base| path.starts_with? base.to_s }
     end

activesupport/lib/active_support/time_with_zone.rb

@@ -196,7 +196,7 @@ def rfc2822
 
     # Returns a string of the object's date and time.
     # Accepts an optional <tt>format</tt>:
-    # * <tt>:default</tt> - default value, mimics Ruby 1.9 Time#to_s format.
+    # * <tt>:default</tt> - default value, mimics Ruby Time#to_s format.
     # * <tt>:db</tt> - format outputs time in UTC :db time. See Time#to_formatted_s(:db).
     # * Any key in <tt>Time::DATE_FORMATS</tt> can be used. See active_support/core_ext/time/conversions.rb.
     def to_s(format = :default)
@@ -205,7 +205,7 @@ def to_s(format = :default)
       elsif formatter = ::Time::DATE_FORMATS[format]
         formatter.respond_to?(:call) ? formatter.call(self).to_s : strftime(formatter)
       else
-        "#{time.strftime("%Y-%m-%d %H:%M:%S")} #{formatted_offset(false, 'UTC')}" # mimicking Ruby 1.9 Time#to_s format
+        "#{time.strftime("%Y-%m-%d %H:%M:%S")} #{formatted_offset(false, 'UTC')}" # mimicking Ruby Time#to_s format
       end
     end
     alias_method :to_formatted_s, :to_s

railties/lib/rails.rb

@@ -14,7 +14,7 @@
 require 'active_support/railtie'
 require 'action_dispatch/railtie'
 
-# For Ruby 1.9, UTF-8 is the default internal and external encoding.
+# UTF-8 is the default internal and external encoding.
 silence_warnings do
   Encoding.default_external = Encoding::UTF_8
   Encoding.default_internal = Encoding::UTF_8