samples: clean-up local .m2 repo on :clean (#2344)

samples/build.gradle

@@ -18,6 +18,14 @@ allprojects {
     }
 }
 
+def localRepo = rootProject.file('build/.m2-local')
+
+task clean {
+    doLast {
+        delete(localRepo)
+    }
+}
+
 task buildSh(type: Exec) {
     errorOutput = System.out
     ignoreExitValue = true

samples/curl/build.gradle

@@ -2,7 +2,7 @@ plugins {
     id 'kotlin-multiplatform'
 }
 
-def localRepo = rootProject.file('build/.m2-repo')
+def localRepo = rootProject.file('build/.m2-local')
 
 repositories {
     maven { url = "file://$localRepo" }

samples/libcurl/build.gradle

@@ -8,7 +8,7 @@ plugins {
 group 'org.jetbrains.kotlin.sample.native'
 version '1.0'
 
-def localRepo = rootProject.file('build/.m2-repo')
+def localRepo = rootProject.file('build/.m2-local')
 
 publishing {
     repositories {