Remove Yul functions that don't exist in Solidity assembly

Author: haltman-at

solidity.js

@@ -114,9 +114,7 @@ function hljsDefineSolidity(hljs) {
             'calldataload calldatasize calldatacopy codesize codecopy extcodesize extcodecopy returndatasize returndatacopy extcodehash ' +
             'create create2 call callcode delegatecall staticcall ' +
             'log0 log1 log2 log3 log4 ' +
-            'chainid origin gasprice blockhash coinbase timestamp number difficulty gaslimit ' +
-            //not opcodes, but builtin Yul functions
-            'datasize dataoffset datacopy',
+            'chainid origin gasprice blockhash coinbase timestamp number difficulty gaslimit',
         literal:
             'true false'
     };