[Build] Remove duplicated configuration of tycho-p2-extras-plugin

Most parts of the configuration are already inherited from the
'eclipse-platform-parent'.
And leverage the new overwritable property to permanently disable the
baseline check, which is introduced in
eclipse-platform/eclipse.platform.releng.aggregator#2381

org.eclipse.jdt.annotation_v1/build.properties

@@ -20,3 +20,7 @@ bin.includes = META-INF/,\
                src/,\
                about.html
 src.includes = about.html
+
+# Disable all baseline and API checks for this older version of org.eclipse.jdt.annotation
+pom.model.property.skipAPIAnalysis = true
+pom.model.property.version.baseline.check.skip = true

pom.xml

@@ -91,30 +91,6 @@
           </execution>
           </executions>
         </plugin>
-        <plugin>
-        	<groupId>org.eclipse.tycho.extras</groupId>
-            <artifactId>tycho-p2-extras-plugin</artifactId>
-            <version>${tycho.version}</version>
-            <executions>
-            	<execution> <!-- Checks versions are properly bumped from one stream to the other -->
-                	<id>compare-attached-artifacts-with-release</id>
-                     <goals>
-                     	<goal>compare-version-with-baselines</goal>
-                     </goals>
-                     <configuration>
-                        <skip>${compare-version-with-baselines.skip}</skip>
-                        <baselines>
-                        	<baseline>${previous-release.baseline}</baseline>
-                        </baselines>
-                        <comparator>zip</comparator>
-                        <ignoredPatterns>
-                        	<pattern>META-INF/ECLIPSE_.RSA</pattern>
-                            <pattern>META-INF/ECLIPSE_.SF</pattern>
-                        </ignoredPatterns>
-                     </configuration>
-               	</execution>
-        	</executions>
-      	</plugin>
       </plugins>
     </pluginManagement>
   </build>