*/*: remove proxy-maint project from metadata.xml

Signed-off-by: Anna (cybertailor) Vyalkova <cyber+gentoo@sysrq.in>

dev-python/python-telegram-bot/metadata.xml

@@ -5,14 +5,10 @@
 		<email>davidroman96@gmail.com</email>
 		<name>David Roman</name>
 	</maintainer>
-	<maintainer type="person" proxied="yes">
+	<maintainer type="person">
 		<email>dwosky@pm.me</email>
 		<name>Pedro Arizmendi</name>
 	</maintainer>
-	<maintainer type="project" proxied="proxy">
-		<email>proxy-maint@gentoo.org</email>
-		<name>Gentoo Proxy Maintainers Project</name>
-	</maintainer>
 	<upstream>
 		<remote-id type="github">python-telegram-bot/python-telegram-bot</remote-id>
 		<doc>https://docs.python-telegram-bot.org/en/stable/</doc>

dev-python/rstcheck/metadata.xml

@@ -5,10 +5,6 @@
     <email>samuelbernardo.mail@gmail.com</email>
     <name>Samuel Bernardo</name>
   </maintainer>
-  <maintainer type="project">
-    <email>proxy-maint@gentoo.org</email>
-    <name>Proxy Maintainers</name>
-  </maintainer>
   <upstream>
     <remote-id type="pypi">rstcheck</remote-id>
     <remote-id type="github">rstcheck/rstcheck</remote-id>

sys-block/partclone/metadata.xml

@@ -1,10 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!DOCTYPE pkgmetadata SYSTEM "https://www.gentoo.org/dtd/metadata.dtd">
 <pkgmetadata>
-	<maintainer type="project" proxied="proxy">
-		<email>proxy-maint@gentoo.org</email>
-		<name>Proxy Maintainers</name>
-	</maintainer>
+	<!-- maintainer-needed -->
 	<upstream>
 		<remote-id type="github">Thomas-Tsai/partclone</remote-id>
 	</upstream>