Remove duplicate NEWS.md item (#961)

Author: jack-davison

NEWS.md

@@ -14,8 +14,6 @@
 
 * Updated vignettes to replace `{sp}`/`{raster}` usage with `{sf}`/`{terra}` and their corresponding examples. (@jack-davison, #928)
 
-* Updated vignettes to replace `{sp}`/`{raster}` usage with `{sf}`/`{terra}` and their corresponding examples. (@jack-davison, #928)
-
 * `addProviderTiles()` will now error if the chosen `provider` does not match any currently loaded provider (by default, those in `providers`). This behaviour can be toggled off by setting the new `check` argument to `FALSE` (@jack-davison, #929)
 
 # leaflet 2.2.2