[fix] Remove deprecated units functions from NAMESPACE

NAMESPACE

@@ -325,8 +325,6 @@ importFrom(stringi,stri_wrap)
 importFrom(tools,file_ext)
 importFrom(tools,file_path_sans_ext)
 importFrom(units,drop_units)
-importFrom(units,install_conversion_constant)
-importFrom(units,install_symbolic_unit)
 importFrom(units,set_units)
 importFrom(utils,capture.output)
 importFrom(utils,combn)

R/units.R

@@ -1,23 +1,22 @@
 #' @importFrom data.table fread
-#' @importFrom units install_symbolic_unit install_conversion_constant
 NULL
 
 # reg_custom_units {{{
 reg_custom_units <- function () {
     tryCatch(
         {
-            if (packageVersion("units") < 0.7) {
-                install_symbolic_unit("person")
-                install_symbolic_unit("dollar")
-                install_symbolic_unit("thousandths")
-                install_conversion_constant("Wh", "J", 3.6E3)
-                install_conversion_constant("inH2O", "inch_H2O_39F", 1)
+            if (utils::packageVersion("units") < 0.7) {
+                units::install_symbolic_unit("person")
+                units::install_symbolic_unit("dollar")
+                units::install_symbolic_unit("thousandths")
+                units::install_conversion_constant("Wh", "J", 3.6E3)
+                units::install_conversion_constant("inH2O", "inch_H2O_39F", 1)
             } else {
-                install_unit("person")
-                install_unit("dollar")
-                install_unit("thousandths")
-                install_unit("Wh", "3.6E3 J")
-                install_unit("inH2O", "1 inch_H2O_39F")
+                units::install_unit("person")
+                units::install_unit("dollar")
+                units::install_unit("thousandths")
+                units::install_unit("Wh", "3.6E3 J")
+                units::install_unit("inH2O", "1 inch_H2O_39F")
             }
             TRUE
         },