lto-wrapper warning note

Current gcc adds a note to the LTO "using serial compilation" warning.

	* lib/binutils-common.exp (prune_warnings_extra): Remove
	lto-wrapper note.

binutils/testsuite/lib/binutils-common.exp

diff --git a/binutils/testsuite/lib/binutils-common.exp b/binutils/testsuite/lib/binutils-common.exp
index edde241..3a43c9e 100644
--- a/binutils/testsuite/lib/binutils-common.exp
+++ b/binutils/testsuite/lib/binutils-common.exp
@@ -755,6 +755,7 @@
 
     # Ignore LTO warnings triggered by configuring with --enable-pgo-build=lto.
     regsub -all "(^|\n)(\[^\n\]*lto-wrapper: warning: using serial compilation of \[0-9\]+ LTRANS jobs\[^\n\]*\n?)+" $text "\\1" text
+    regsub -all "(^|\n)(\[^\n\]*lto-wrapper: note: \[^\n\]*\n?)+" $text "\\1" text
 
     return $text
 }