Apply suggestions from code review

Co-authored-by: Geoffrey White <40627776+geoffw0@users.noreply.github.com>

rust/ql/src/queries/security/CWE-918/RequestForgery.qhelp

@@ -46,9 +46,6 @@ known fixed string.
   <li>
     <a href="https://owasp.org/www-community/attacks/Server_Side_Request_Forgery">OWASP SSRF</a>
   </li>
-  <li>
-    <a href="https://cwe.mitre.org/data/definitions/918.html">CWE-918: Server-Side Request Forgery (SSRF)</a>
-  </li>
 </references>
 
 </qhelp>

rust/ql/src/queries/security/CWE-918/RequestForgery.ql

@@ -13,9 +13,6 @@
 private import rust
 private import codeql.rust.dataflow.TaintTracking
 private import codeql.rust.dataflow.DataFlow
-private import codeql.rust.dataflow.FlowSink
-private import codeql.rust.Concepts
-private import codeql.rust.security.CleartextTransmissionExtensions
 private import codeql.rust.security.RequestForgeryExtensions
 
 /**
@@ -37,5 +34,5 @@ import RequestForgeryFlow::PathGraph
 
 from RequestForgeryFlow::PathNode source, RequestForgeryFlow::PathNode sink
 where RequestForgeryFlow::flowPath(source, sink)
-select sink.getNode(), source, sink, "The $@ of this request depends on a $@.", sink, "URL",
+select sink.getNode(), source, sink, "The URL of this request depends on a $@.",
   source.getNode(), "user-provided value"

rust/ql/test/query-tests/security/CWE-918/options.yml

@@ -3,4 +3,3 @@ qltest_dependencies:
     - reqwest = { version = "0.12.23", features = ["blocking", "json"] }
     - tokio = { version = "1.0", features = ["full"] }
     - poem = { version = "3.1.12", features = ["server"] }
-    - serde = { version = "1.0", features = ["derive"] }