(v0.7.1.9015) Remove freq()

DESCRIPTION

@@ -1,6 +1,6 @@
 Package: AMR
-Version: 0.7.1.9014
-Date: 2019-07-16
+Version: 0.7.1.9015
+Date: 2019-07-29
 Title: Antimicrobial Resistance Analysis
 Authors@R: c(
     person(
@@ -45,6 +45,7 @@ Depends:
     R (>= 3.1.0)
 Imports:
     backports,
+    clean,
     crayon (>= 1.3.0),
     data.table (>= 1.9.0),
     dplyr (>= 0.7.0),
@@ -59,7 +60,6 @@ Suggests:
     covr (>= 3.0.1),
     curl,
     readxl,
-    rmarkdown,
     rstudioapi,
     rvest (>= 0.3.2),
     testthat (>= 1.0.2),