[gradle][g/c] remove unwanted braces

tools/kotlin-native-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/plugin/KonanPlugin.kt

@@ -376,7 +376,7 @@ class KonanPlugin @Inject constructor(private val registry: ToolingModelBuilderR
                         for (v in konanSoftwareComponent.variants) {
                             publishing.publications.create(v.name, MavenPublication::class.java) {
                                 val coordinates = (v as NativeVariantIdentity).coordinates
-                                project.logger.info("variant with coordiants(${coordinates}) and module: ${coordinates.module}")
+                                project.logger.info("variant with coordinates($coordinates) and module: ${coordinates.module}")
                                 it.artifactId = coordinates.module.name
                                 it.groupId = coordinates.group
                                 it.version = coordinates.version

tools/kotlin-native-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/plugin/KotlinNativePlatformPlugin.kt

@@ -37,7 +37,7 @@ open class KotlinNativePlatformPlugin: KotlinPlatformImplementationPluginBase("n
                     .forEach { task: KonanCompileTask ->
                         task.commonSourceSets.forEach { commonSourceSetName ->
                             val commonSourceSet = commonProject.sourceSets.findByName(commonSourceSetName) ?:
-                            throw GradleException("Cannot find a source set with name '${commonSourceSetName}' " +
+                            throw GradleException("Cannot find a source set with name '$commonSourceSetName' " +
                                     "in a common project '${commonProject.path}' " +
                                     "for an artifact '${task.artifactName}' " +
                                     "in a platform project '${platformProject.path}'")