fix Issue 13288 - rdmd --eval fails because it still imports std.meta…

…strings

rdmd.d

@@ -805,7 +805,7 @@ import std.stdio, std.algorithm, std.array, std.ascii, std.base64,
     std.datetime, std.demangle, std.digest.md, std.encoding, std.exception,
     std.file,
     std.format, std.functional, std.getopt, std.json,
-    std.math, std.mathspecial, std.metastrings, std.mmfile,
+    std.math, std.mathspecial, std.mmfile,
     std.numeric, std.outbuffer, std.parallelism, std.path, std.process,
     std.random, std.range, std.regex, std.signals, std.socket,
     std.socketstream, std.stdint, std.stdio, std.stdiobase, std.stream,