Remove all C++ Telemetry Accumulation calls.

This creates a number of stubs and leaves some surrounding code that may be irrelevant (eg. recorded time stamps, status variables).
Stub resolution/removal should be a follow-up to this.

intl/uconv/ucvlatin/nsISO88595ToUnicode.cpp

@@ -20,7 +20,6 @@ nsISO88595ToUnicodeConstructor(nsISupports *aOuter, REFNSIID aIID,
 #include "8859-5.ut"
   };
 
-  Telemetry::Accumulate(Telemetry::DECODER_INSTANTIATED_ISO_8859_5, true);
   return CreateOneByteDecoder((uMappingTable*) &g_utMappingTable,
                               aOuter, aIID, aResult);
 }