TS: Do not pass --verbose to yarn

Author: asger-semmle

javascript/extractor/src/com/semmle/js/extractor/AutoBuild.java

@@ -599,7 +599,6 @@ protected void installDependencies(Set<Path> filesToExtract) {
                 Arrays.asList(
                     "yarn",
                     "install",
-                    "--verbose",
                     "--non-interactive",
                     "--ignore-scripts",
                     "--ignore-platform",