Remove unnecessary blank lines

Remove blank lines flagged as 'not needed' in code review:
- BuildCacheMojosExecutionStrategy.java: after restoreProjectArtifacts call
- LifecyclePhasesHelper.java: after for loop opening brace

Addresses: apache#394

Author: cowwoc

src/main/java/org/apache/maven/buildcache/BuildCacheMojosExecutionStrategy.java

@@ -266,7 +266,6 @@ private CacheRestorationStatus restoreProject(
 
         // Restore project artifacts
         ArtifactRestorationReport restorationReport = cacheController.restoreProjectArtifacts(cacheResult);
-
         if (!restorationReport.isSuccess()) {
             LOGGER.info("Cannot restore project artifacts, continuing with non cached build");
             return restorationReport.isRestoredFilesInProjectDirectory()

src/main/java/org/apache/maven/buildcache/LifecyclePhasesHelper.java

@@ -182,7 +182,6 @@ private String resolveMojoExecutionLifecyclePhase(MavenProject project, MojoExec
     public List<MojoExecution> getCachedSegment(MavenProject project, List<MojoExecution> mojoExecutions, Build build) {
         List<MojoExecution> list = new ArrayList<>(mojoExecutions.size());
         for (MojoExecution mojoExecution : mojoExecutions) {
-
             // if forked, take originating mojo as a lifecycle phase source
             String lifecyclePhase = resolveMojoExecutionLifecyclePhase(project, mojoExecution);