PR libstdc++/88125 remove duplicate entry in linker script

	PR libstdc++/88125
	* config/abi/pre/gnu.ver (GLIBCXX_3.4.6): Remove unused duplicate
	pattern for std::basic_stringbuf::str().

From-SVN: r267834

libstdc++-v3/ChangeLog

 2019-01-11  Jonathan Wakely  <jwakely@redhat.com>
 
+	PR libstdc++/88125
+	* config/abi/pre/gnu.ver (GLIBCXX_3.4.6): Remove unused duplicate
+	pattern for std::basic_stringbuf::str().
+
 	* config/abi/pre/gnu.ver (GLIBCXX_3.4): Correct recent changes to
 	basic_ostream::operator<< patterns.
 

libstdc++-v3/config/abi/pre/gnu.ver

@@ -1165,10 +1165,6 @@ GLIBCXX_3.4.6 {
 
     _ZNSt15basic_stringbufI[cw]St11char_traitsI[cw]ESaI[cw]EE9showmanycEv;
 
-#ifdef HAVE_SYMVER_SYMBOL_RENAMING_RUNTIME_SUPPORT
-    _ZNKSt15basic_stringbufIwSt11char_traitsIwESaIwEE3strEv;
-#endif
-
     _ZN9__gnu_cxx6__poolILb1EE13_M_initializeEv;
 
 } GLIBCXX_3.4.5;