[SPARK-43448][BUILD] Remove dummy dependency hadoop-openstack

### What changes were proposed in this pull request?

Remove the dummy dependency `hadoop-openstack` from Spark binary artifacts.

### Why are the changes needed?

[HADOOP-18442](https://issues.apache.org/jira/browse/HADOOP-18442) removed the `hadoop-openstack` and temporarily retained a dummy jar for the downstream project which consumes it.

### Does this PR introduce _any_ user-facing change?

No.

### How was this patch tested?

Pass GA.

Closes apache#41133 from pan3793/SPARK-43448.

Authored-by: Cheng Pan <chengpan@apache.org>
Signed-off-by: Dongjoon Hyun <dongjoon@apache.org>

dev/deps/spark-deps-hadoop-3-hive-2.3

@@ -74,7 +74,6 @@ hadoop-azure/3.3.5//hadoop-azure-3.3.5.jar
 hadoop-client-api/3.3.5//hadoop-client-api-3.3.5.jar
 hadoop-client-runtime/3.3.5//hadoop-client-runtime-3.3.5.jar
 hadoop-cloud-storage/3.3.5//hadoop-cloud-storage-3.3.5.jar
-hadoop-openstack/3.3.5//hadoop-openstack-3.3.5.jar
 hadoop-shaded-guava/1.1.1//hadoop-shaded-guava-1.1.1.jar
 hadoop-yarn-server-web-proxy/3.3.5//hadoop-yarn-server-web-proxy-3.3.5.jar
 hive-beeline/2.3.9//hive-beeline-2.3.9.jar

hadoop-cloud/pom.xml

@@ -111,30 +111,6 @@
         </exclusion>
       </exclusions>
     </dependency>
-    <dependency>
-      <groupId>org.apache.hadoop</groupId>
-      <artifactId>hadoop-openstack</artifactId>
-      <version>${hadoop.version}</version>
-      <scope>${hadoop.deps.scope}</scope>
-      <exclusions>
-        <exclusion>
-          <groupId>org.apache.hadoop</groupId>
-          <artifactId>hadoop-common</artifactId>
-        </exclusion>
-        <exclusion>
-          <groupId>commons-logging</groupId>
-          <artifactId>commons-logging</artifactId>
-        </exclusion>
-        <exclusion>
-          <groupId>junit</groupId>
-          <artifactId>junit</artifactId>
-        </exclusion>
-        <exclusion>
-          <groupId>org.mockito</groupId>
-          <artifactId>mockito-all</artifactId>
-        </exclusion>
-      </exclusions>
-    </dependency>
     <dependency>
       <groupId>com.google.cloud.bigdataoss</groupId>
       <artifactId>gcs-connector</artifactId>