Remove C++11 requirement

Author: dfalbel

DESCRIPTION

@@ -22,7 +22,6 @@ Suggests:
     testthat (>= 3.0.0),
     patrick
 Config/testthat/edition: 3
-SystemRequirements: C++11
 URL: https://github.com/mlverse/wav,
     https://mlverse.github.io/wav/
 BugReports: https://github.com/mlverse/wav/issues