Tidy up unused images and dependencies (#1133)

* Remove unused images. Fixes #1132
* Remove unused dependencies

DESCRIPTION

@@ -14,17 +14,15 @@ Imports:
     dbplyr,
     dplyr,
     duckdb,
-    feather,
     gapminder,
     ggplot2,
     ggrepel,
     hexbin,
     janitor,
+    jsonlite,
     Lahman,
     leaflet,
-    lobstr,
     maps,
-    microbenchmark,
     nycflights13,
     openxlsx,
     palmerpenguins,
@@ -33,31 +31,24 @@ Imports:
     repurrrsive,
     slider,
     stringr,
+    tidymodels,
     tidyverse,
     tidyr,
     viridis,
     wakefield,
     writexl
 Suggests:
-    bookdown,
-    bslib,
     downlit,
     htmltools,
-    htmlwidgets,
     jpeg,
-    jsonlite,
     knitr,
-    png,
-    sessioninfo,
-    tidymodels,
-    xml2
+    sessioninfo
 Remotes:
     tidyverse/dplyr,
     tidyverse/dbplyr,
     tidyverse/stringr,
     tidyverse/tidyr,
     tidyverse/purrr,
-    tidyverse/ggplot2,
     jennybc/repurrrsive
 Encoding: UTF-8
 License: CC NC ND 3.0