Unsupported class version error was unrelated and not the cause of the build failure. Reintroducing mvn installation only in Dockerfile and not in multiarch and ubuntu.

Author: kannanjgithub

buildscripts/grpc-java-artifacts/Dockerfile

@@ -34,3 +34,4 @@ RUN curl -Ls https://github.com/Kitware/CMake/releases/download/v3.26.3/cmake-3.
 RUN curl -Ls https://dlcdn.apache.org/maven/maven-3/3.8.8/binaries/apache-maven-3.8.8-bin.tar.gz | \
     tar xz -C /var/local
 ENV PATH /var/local/cmake-3.26.3-linux-x86_64/bin:/var/local/apache-maven-3.8.8/bin:$PATH
+

buildscripts/grpc-java-artifacts/Dockerfile.multiarch.base

@@ -16,8 +16,5 @@ RUN export DEBIAN_FRONTEND=noninteractive && \
 
 RUN curl -Ls https://github.com/Kitware/CMake/releases/download/v3.26.3/cmake-3.26.3-linux-x86_64.tar.gz | \
     tar xz -C /var/local
-    
-# Install Maven
-RUN curl -Ls https://dlcdn.apache.org/maven/maven-3/3.8.8/binaries/apache-maven-3.8.8-bin.tar.gz | \
-    tar xz -C /var/local
-ENV PATH /var/local/cmake-3.26.3-linux-x86_64/bin:/var/local/apache-maven-3.8.8/bin:$PATH    
+ENV PATH /var/local/cmake-3.26.3-linux-x86_64/bin:$PATH
+

buildscripts/grpc-java-artifacts/Dockerfile.ubuntu2004.base

@@ -15,8 +15,5 @@ RUN export DEBIAN_FRONTEND=noninteractive && \
 
 RUN curl -Ls https://github.com/Kitware/CMake/releases/download/v3.26.3/cmake-3.26.3-linux-x86_64.tar.gz | \
     tar xz -C /var/local
-    
-# Install Maven
-RUN curl -Ls https://dlcdn.apache.org/maven/maven-3/3.8.8/binaries/apache-maven-3.8.8-bin.tar.gz | \
-    tar xz -C /var/local
-ENV PATH /var/local/cmake-3.26.3-linux-x86_64/bin:/var/local/apache-maven-3.8.8/bin:$PATH    
+ENV PATH /var/local/cmake-3.26.3-linux-x86_64/bin:$PATH
+