KT-19276: Drop exception logging on loading script definitions failure

See YT discussion
Have to come up with more meaningful diagnostics on definition loading

#KT-19276 Fixed

compiler/frontend.script/src/org/jetbrains/kotlin/script/scriptTemplateProviderExtensionPoint.kt

@@ -61,7 +61,7 @@ interface ScriptTemplatesProvider {
 }
 
 fun makeScriptDefsFromTemplatesProviderExtensions(project: Project,
-                                                  errorsHandler: ((ScriptTemplatesProvider, Throwable) -> Unit) = { _, ex -> throw ex }
+                                                  errorsHandler: ((ScriptTemplatesProvider, Throwable) -> Unit)
 ): List<KotlinScriptDefinition> =
         makeScriptDefsFromTemplatesProviders(Extensions.getArea(project).getExtensionPoint(ScriptTemplatesProvider.EP_NAME).extensions.asIterable(),
                                              errorsHandler)

idea/idea-core/src/org/jetbrains/kotlin/idea/core/script/ScriptDependenciesManager.kt

@@ -54,7 +54,9 @@ class ScriptDependenciesManager internal constructor(
     fun getScriptDependencies(file: VirtualFile) = cacheUpdater.getCurrentDependencies(file)
 
     private fun reloadScriptDefinitions() {
-        val def = makeScriptDefsFromTemplatesProviderExtensions(project, { ep, ex -> log.warn("[kts] Error loading definition from ${ep.id}", ex) })
+        val def = makeScriptDefsFromTemplatesProviderExtensions(
+                project, { ep, ex -> /* do nothing, logging these exception creates too much noise*/}
+        )
         scriptDefinitionProvider.setScriptDefinitions(def)
     }