Use less pom.xml files and remove unnecessary m2e lifecycle-mappings

This enhances the fix of eclipse-equinox#17

It changes the groupId from org.eclipse.equinox to
org.eclipse.equinox.p2 for more plug-ins

Signed-off-by: Hannes Wellmann <wellmann.hannes1@gmx.net>

.mvn/extensions.xml

@@ -3,6 +3,6 @@
 	<extension>
 		<groupId>org.eclipse.tycho</groupId>
 		<artifactId>tycho-build</artifactId>
-		<version>2.7.0</version>
+		<version>2.7.1</version>
 	</extension>
 </extensions>

features/org.eclipse.equinox.p2.core.feature/pom.xml → features/pom.xml

@@ -1,30 +1,35 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!--
-  Copyright (c) 2012,2017 Eclipse Foundation.
+  Copyright (c) 2012, 2022 Eclipse Foundation.
   All rights reserved. This program and the accompanying materials
   are made available under the terms of the Eclipse Distribution License v1.0
   which accompanies this distribution, and is available at
   http://www.eclipse.org/org/documents/edl-v10.php
  
   Contributors:
      Igor Fedorenko - initial implementation
-     Krzysztof Daniel - 419647: React to ECF feature restructuring
+     Hannes Wellmann - leaverage Tycho-pomless more
 -->
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
   <modelVersion>4.0.0</modelVersion>
   <parent>
     <groupId>org.eclipse.equinox.p2</groupId>
     <artifactId>rt.equinox.p2</artifactId>
     <version>4.24.0-SNAPSHOT</version>
-    <relativePath>../..</relativePath>
   </parent>
-  <groupId>org.eclipse.equinox</groupId>
-  <artifactId>org.eclipse.equinox.p2.core.feature</artifactId>
-  <version>1.6.1400-SNAPSHOT</version>
-  <packaging>eclipse-feature</packaging>
+  <artifactId>features</artifactId>
+  <packaging>pom</packaging>
 
-
-  <build>
+  <modules>
+    <module>features/org.eclipse.equinox.p2.core.feature</module>
+    <module>features/org.eclipse.equinox.p2.extras.feature</module>
+    <module>features/org.eclipse.equinox.p2.discovery.feature</module>
+    <module>features/org.eclipse.equinox.p2.sdk</module>
+    <module>features/org.eclipse.equinox.p2.rcp.feature</module>
+    <module>features/org.eclipse.equinox.p2.user.ui</module>
+  </modules>
+
+    <build>
     <plugins>
       <plugin>
         <groupId>org.eclipse.tycho</groupId>
@@ -36,12 +41,6 @@
             <goals>
               <goal>feature-source</goal>
             </goals>
-            <configuration>
-              <excludes>
-                <plugin id="org.sat4j.core"/>
-                <plugin id="org.sat4j.pb"/>
-              </excludes>
-            </configuration>
           </execution>
         </executions>
       </plugin>
@@ -61,4 +60,6 @@
       </plugin>
     </plugins>
   </build>
+
+
 </project>