Remove references to ICE_CPP11_MAPPING

cpp/DataStorm/stock/README.md

@@ -3,16 +3,16 @@ topic and send partial updates to update the stock price or volume. The reader
 prints out the stock information and partial updates.
 
 The demo uses Slice to define the `Demo::Stock` class in the `Stock.ice` file.
-When compiling the code generated by `slice2cpp`, it's important to define the
-`ICE_CPP11_MAPPING` macro to use the Ice for C++11 mapping instead.
 
 To run the demo, start the writer and specify the ticker of the stocks to write:
+
 ```
 writer
 ```
 
 In a separate window, start the reader and specify the stock tickers you wish to
 follow:
+
 ```
 reader
 ```

cpp/make/Make.rules

@@ -61,7 +61,7 @@ $1_srcext               := cpp
 $1_dependencies         := $$(or $$($1_dependencies),Ice)
 $1_slicecompiler        := slice2cpp
 $1_sliceflags           := -I$(ice_slicedir) -I$1 $$($1_sliceflags)
-$1_cppflags             := -DICE_CPP11_MAPPING -std=c++17 -I$1 -I$1/generated $(ice_cppflags) $$($1_cppflags)
+$1_cppflags             := -std=c++17 -I$1 -I$1/generated $(ice_cppflags) $$($1_cppflags)
 $1_caninstall           := no
 
 # Also link with IceSSL, IceDiscovery and IceLocatorDiscovery when compiling the project with the static configuration