SONAR-17149 drop fromHotspot field from issues payload

server/sonar-webserver-webapi/src/main/java/org/sonar/server/issue/ws/SearchAction.java

         + "<br/>When issue indexation is in progress returns 503 service unavailable HTTP code.")
       .setSince("3.6")
       .setChangelog(
+        new Change("9.6", "Response field 'fromHotspot' dropped."),
         new Change("9.6", "Added facets 'pciDss-3.2' and 'pciDss-4.0"),
         new Change("9.6", "Added parameters 'pciDss-3.2' and 'pciDss-4.0"),
         new Change("9.6", "Response field 'ruleDescriptionContextKey' added"),

sonar-ws/src/main/protobuf/ws-issues.proto

   optional string pullRequest = 32;
 
   optional string externalRuleEngine = 33;
-  optional bool fromHotspot = 34;
+  reserved 34; //drop fromHotspot
   optional string scope = 35;
 
   optional bool quickFixAvailable = 36;