Revert "kde-plasma: new category"

This reverts commit b10546510b.

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

kde-plasma/metadata.xml

@@ -1,7 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<!DOCTYPE catmetadata SYSTEM "https://www.gentoo.org/dtd/metadata.dtd">
-<catmetadata>
-	<longdescription lang="en">
-		The kde-plasma category contains packages for the KDE Plasma desktop environment.
-	</longdescription>
-</catmetadata>

profiles/categories

@@ -6,5 +6,4 @@ dev-nim
 dev-zig
 mpv-plugin
 net-client
-kde-plasma
 phosh-base