Remove unnecessary ellipsis (#8964)

esphome/components/uart/uart_component_libretiny.cpp

@@ -145,7 +145,7 @@ bool LibreTinyUARTComponent::read_array(uint8_t *data, size_t len) {
 
 int LibreTinyUARTComponent::available() { return this->serial_->available(); }
 void LibreTinyUARTComponent::flush() {
-  ESP_LOGVV(TAG, "    Flushing...");
+  ESP_LOGVV(TAG, "    Flushing");
   this->serial_->flush();
 }