chore: update RoxygenNote version and remove unused na.omit.list function

Author: PMassicotte

DESCRIPTION

@@ -15,6 +15,6 @@ URL: https://github.com/PMassicotte/gtrendsR
 Depends: R (>= 3.5.0)
 LazyData: yes
 Imports: ggplot2, jsonlite, anytime, curl
-RoxygenNote: 7.2.0
+RoxygenNote: 7.3.2
 Suggests: knitr, rmarkdown, tinytest
 Encoding: UTF-8

R/zzz.R

@@ -748,15 +748,6 @@ create_geo_payload <- function(
   return(df)
 }
 
-## Remove NA from list
-na.omit.list <- function(y) {
-  return(y[
-    !sapply(y, function(x) {
-      all(is.na(x))
-    })
-  ])
-}
-
 ## Replace special characters in keywords like P&500 -> P%26500
 encode_keyword <- function(url) {
   url <- gsub(