BIP-21 remove of all "size" mentions

Author: dr-orlovsky

bip-0021.mediawiki

@@ -60,7 +60,7 @@ The scheme component ("bitcoin:") is case-insensitive, and implementations must
 *message: message that describes the transaction to the user ([[#Examples|see examples below]])
 *(others): optional, for future extensions
 
-==== Transfer amount/size ====
+==== Transfer amount ====
 
 If an amount is provided, it MUST be specified in decimal BTC.
 All amounts MUST contain no commas and use a period (.) as the separating character to separate whole numbers and decimal fractions.