refactor(HelloController): remove unused methods and comments

src/main/java/de/szut/lf8_starter/hello/HelloController.java

@@ -45,22 +45,6 @@ public class HelloController {
         return this.helloMapper.mapToGetDto(helloEntity);
     }
 
-    @Operation(summary = "delivers a list of hellos")
-    @ApiResponses(value = {
-            @ApiResponse(responseCode = "200", description = "list of hellos",
-                    content = {@Content(mediaType = "application/json",
-                            schema = @Schema(implementation = HelloGetDto.class))}),
-            @ApiResponse(responseCode = "401", description = "not authorized",
-                    content = @Content)})
-    @GetMapping
-    public List<HelloGetDto> findAll() {
-        return this.service
-                .readAll()
-                .stream()
-                .map(e -> this.helloMapper.mapToGetDto(e))
-                .toList();
-    }
-
     @Operation(summary = "deletes a Hello by id")
     @ApiResponses(value = {
             @ApiResponse(responseCode = "204", description = "delete successful"),
@@ -78,22 +62,4 @@ public class HelloController {
             this.service.delete(entity);
         }
     }
-
-    @Operation(summary = "find hellos by message")
-    @ApiResponses(value = {
-            @ApiResponse(responseCode = "200", description = "List of hellos who have the given message",
-                    content = {@Content(mediaType = "application/json",
-                            schema = @Schema(implementation = HelloGetDto.class))}),
-            @ApiResponse(responseCode = "404", description = "qualification description does not exist",
-                    content = @Content),
-            @ApiResponse(responseCode = "401", description = "not authorized",
-                    content = @Content)})
-    @GetMapping("/findByMessage")
-    public List<HelloGetDto> findAllEmployeesByQualification(@RequestParam String message) {
-        return this.service
-                .findByMessage(message)
-                .stream()
-                .map(e -> this.helloMapper.mapToGetDto(e))
-                .toList();
-    }
 }