C++17 is the default now.

Test: builds
Change-Id: I06aae3faf93247ef39aa3c3d0384ccf93db327d6
diff --git a/script_api/Android.bp b/script_api/Android.bp
index 8f42e47..943f956 100644
--- a/script_api/Android.bp
+++ b/script_api/Android.bp
@@ -2,7 +2,6 @@
 
 cc_binary_host {
     name: "rs-api-doc-generator",
-    cpp_std: "c++17",
     srcs: [
         "Generator.cpp",
         "Specification.cpp",