R SDK for ADLS: Remove Unsupported Operations

Author: Omkar Aradhya

R/AzureDataLake.R

@@ -945,52 +945,3 @@ adls.fileinputstream.close <- function(adlFileInputStream,
   adlFileInputStream$buffer <- raw(0) # release byte buffer so it can be GC'ed even if app continues to hold reference to stream
   return(NULL)
 }
-
-#' gets whether mark and reset are supported by `ADLFileInputStream`. Always returns false.
-#'
-#' @param adlFileInputStream adlFileInputStream of the file
-#' @return FALSE (always)
-#'
-#' @family Azure Data Lake Store functions
-#' @export
-adls.fileinputstream.marksupported <- function(adlFileInputStream) {
-  if (!missing(adlFileInputStream) && !is.null(adlFileInputStream)) {
-    assert_that(is.adlFileInputStream(adlFileInputStream))
-    adlFileInputStreamCheck(adlFileInputStream)
-  }
-  
-  return(FALSE)
-}
-
-#' Not supported by this stream. Throws `UnsupportedOperationException`
-#'
-#' @param adlFileInputStream adlFileInputStream of the file
-#' @param readLimit ignored
-#' @return NULL (void)
-#'
-#' @family Azure Data Lake Store functions
-#' @export
-adls.fileinputstream.mark <- function(adlFileInputStream, readLimit) {
-  if (!missing(adlFileInputStream) && !is.null(adlFileInputStream)) {
-    assert_that(is.adlFileInputStream(adlFileInputStream))
-    adlFileInputStreamCheck(adlFileInputStream)
-  }
-
-  stop(paste0("UnsupportedOperationException: mark()/reset() not supported on this stream - readLimit: ", readLimit))
-}
-
-#' Not supported by this stream. Throws `UnsupportedOperationException`
-#'
-#' @param adlFileInputStream adlFileInputStream of the file
-#' @return NULL (void)
-#'
-#' @family Azure Data Lake Store functions
-#' @export
-adls.fileinputstream.reset <- function(adlFileInputStream) {
-  if (!missing(adlFileInputStream) && !is.null(adlFileInputStream)) {
-    assert_that(is.adlFileInputStream(adlFileInputStream))
-    adlFileInputStreamCheck(adlFileInputStream)
-  }
-
-  stop("UnsupportedOperationException: mark()/reset() not supported on this stream")
-}