Remove redundant buildUrl Maven property declarations (#317)

* Initial plan

* Remove redundant buildUrl Maven property declarations from child pom.xml files

All child pom.xml files inherit buildUrl from the root releng/pom.xml.
Removed redundant redefinitions from:
- releng/ide/pom.xml
- releng/runner/pom.xml
- releng/rcptt/pom.xml
- releng/rap/pom.xml
- releng/mirroring/pom.xml

Agent-Logs-Url: https://github.com/eclipse-rcptt/org.eclipse.rcptt/sessions/33c6b08a-d396-4af8-962b-1a3ed119c8ba

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: Vasili Gulevich <650857+basilevs@users.noreply.github.com>

Author: Copilot

releng/ide/pom.xml

@@ -62,7 +62,6 @@
     </plugins>
   </build>
   <properties>
-    <buildUrl>file:/${user.dir}</buildUrl>
     <rcpttRuntimeRepo>${buildUrl}/runtime/org.eclipse.rcptt.runtime-updatesite/target/repository/</rcpttRuntimeRepo>
     <e4xRepository>${buildUrl}/repository/e4x/target/repository</e4xRepository>
     <coreRepository>${buildUrl}/repository/core/target/repository</coreRepository>

releng/mirroring/pom.xml

@@ -28,9 +28,6 @@
     <module>../../repository/dependencies/</module>
   </modules>
 
-  <properties>
-    <buildUrl>file:/${user.dir}</buildUrl>
-  </properties>
 
  <!--  <repositories>
     <repository>

releng/rap/pom.xml

@@ -83,7 +83,6 @@ documentation
 
 
 	<properties>
-		<buildUrl>file:${user.dir}</buildUrl>
 		<rapRcpttRepository>${buildUrl}/</rapRcpttRepository>
 		<rcpttRepositoryFull>${buildUrl}/repository/full/target/repository/</rcpttRepositoryFull>
 		<rcpttExternalDepencenciesRepository>${buildUrl}/repository/dependencies/target/repository</rcpttExternalDepencenciesRepository>

releng/rcptt/pom.xml

@@ -24,7 +24,6 @@
     <module>../../repository/rcptt</module>
   </modules>
   <properties>
-    <buildUrl>file:/${user.dir}</buildUrl>
     <repositoryFull>${buildUrl}/repository/full/target/repository/</repositoryFull>
     <rapRepository>${buildUrl}/repository/rap/target/repository/</rapRepository>
     <dependenciesRepository>${buildUrl}/repository/dependencies/target/repository/</dependenciesRepository>

releng/runner/pom.xml

@@ -24,7 +24,6 @@
     <module>../../runner</module>
   </modules>
   <properties>
-    <buildUrl>file:/${user.dir}</buildUrl>
     <repositoryFull>${buildUrl}/repository/full/target/repository/</repositoryFull>
     <repositoryRap>${buildUrl}/repository/rap/target/repository/</repositoryRap>
   </properties>