update DESCRIPTION

Author: ciaramccarthy1

DESCRIPTION

@@ -26,6 +26,7 @@ Depends:
 Imports:
     cli,
     dplyr,
+    rlang,
     readr,
     ggplot2,
     wwinference,
@@ -42,15 +43,13 @@ Suggests:
     testthat (>= 3.1.9),
     usethis,
     withr,
-    knitr,
     tidyr,
     roxyglobals
 Encoding: UTF-8
 Language: en-GB
 Roxygen: list(markdown = TRUE, roclets = c("collate", "namespace", "rd",
     "roxyglobals::global_roclet"))
 RoxygenNote: 7.3.3
-VignetteBuilder: knitr
 Remotes:
   wwinference=CDCgov/ww-inference-model
 Config/testthat/edition: 3