*/*: remove proxied="yes" from metadata.xml

GURU don't have proxied maintainers.
Also remove two instances where proxy-maint was referenced

Signed-off-by: David Roman <davidroman96@gmail.com>

dev-util/libtypec-utils/metadata.xml

@@ -6,14 +6,10 @@
     to debug system issues around USB-C/USB PD topology, based on
     the libtypec project.
   </longdescription>
-  <maintainer type="person" proxied="yes">
+  <maintainer type="person">
     <name>Adrian Ratiu</name>
     <email>adrian.ratiu@collabora.com</email>
   </maintainer>
-  <maintainer type="project" proxied="proxy">
-    <email>proxy-maint@gentoo.org</email>
-    <name>Proxy Maintainers</name>
-  </maintainer>
   <upstream>
     <maintainer>
       <name>Rajaram Regupathy</name>

dev-util/stripe-cli/metadata.xml

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!DOCTYPE pkgmetadata SYSTEM "https://www.gentoo.org/dtd/metadata.dtd">
 <pkgmetadata>
-	<maintainer type="person" proxied="yes">
+	<maintainer type="person">
 		<email>zdanevich.vitaly@ya.ru</email>
 		<name>Vitaly Zdanevich</name>
 	</maintainer>