Refresh library list

doc/libraries.xml

@@ -1676,6 +1676,12 @@
     <category>Data</category>
     <category>Math</category>
   </library>
+  <library>
+    <key>geometry/extensions</key>
+    <boost-version>1.29.0</boost-version>
+    <update-version>1.73.0 beta1</update-version>
+    <status>removed</status>
+  </library>
   <library>
     <key>geometry/extensions</key>
     <library_path>libs/geometry/extensions/</library_path>
@@ -1698,12 +1704,6 @@
     <category>Data</category>
     <category>Math</category>
   </library>
-  <library>
-    <key>geometry/extensions</key>
-    <boost-version>1.29.0</boost-version>
-    <update-version>1.73.0 beta1</update-version>
-    <status>removed</status>
-  </library>
   <library>
     <key>geometry/index</key>
     <library_path>libs/geometry/index/</library_path>
@@ -4829,18 +4829,6 @@
     <documentation>libs/utility/doc/html/string_ref.html</documentation>
     <category>Containers</category>
   </library>
-  <library>
-    <key>utility/string_ref</key>
-    <library_path>libs/utility/</library_path>
-    <boost-version>1.71.0</boost-version>
-    <update-version>master</update-version>
-    <name>String_ref</name>
-    <authors>Marshall Clow</authors>
-    <maintainers>Marshall Clow &lt;marshall -at- idio.com&gt;</maintainers>
-    <description>String view templates.</description>
-    <documentation>libs/utility/doc/html/string_ref.html</documentation>
-    <category>Containers</category>
-  </library>
   <library>
     <key>utility/swap</key>
     <library_path>libs/utility/</library_path>