Replace commented out snapshot generation code

Author: erikkerber

src/main/kotlin/io/bazel/kotlin/builder/tasks/jvm/ClasspathSnapshotGenerator.kt

@@ -17,13 +17,13 @@ class ClasspathSnapshotGenerator(
 ) {
 
     fun run() {
-        if (outputSnapshot.exists()) { return }
+        // if (outputSnapshot.exists()) { return }
         val timeSpent = measureTimeMillis {
             val compilationService = CompilationService.loadImplementation(this.javaClass.classLoader!!)
-            // val snapshot =
-            //     compilationService.calculateClasspathSnapshot(
-            //         inputJar.toFile(), granularity.toClassSnapshotGranularity)
-            // snapshot.saveSnapshot(outputSnapshot.toFile())
+            val snapshot =
+                compilationService.calculateClasspathSnapshot(
+                    inputJar.toFile(), granularity.toClassSnapshotGranularity)
+            snapshot.saveSnapshot(outputSnapshot.toFile())
         }
         // TODO: Log impl
         // LOG.info("$timeSpent ms for input jar: $inputJar")