Remove step function high level library for now

Author: zoewangg

.changes/next-release/removal-AWSStepFunction-4f207f3.json

@@ -0,0 +1,5 @@
+{
+    "category": "AWS Step Function", 
+    "type": "removal", 
+    "description": "Remove AWS Step Function high level library for now. We will add them in the future."
+}

services/sfn/pom.xml

@@ -56,21 +56,5 @@
             <artifactId>protocol-core</artifactId>
             <version>${awsjavasdk.version}</version>
         </dependency>
-        <dependency>
-            <artifactId>json-path</artifactId>
-            <exclusions>
-                <exclusion>
-                    <artifactId>json-smart</artifactId>
-                    <groupId>net.minidev</groupId>
-                </exclusion>
-            </exclusions>
-            <groupId>com.jayway.jsonpath</groupId>
-            <version>${json-path.version}</version>
-        </dependency>
-
-        <dependency>
-            <groupId>com.fasterxml.jackson.core</groupId>
-            <artifactId>jackson-databind</artifactId>
-        </dependency>
     </dependencies>
 </project>