head: remove page from osx (#9533)

pages/osx/head.md

@@ -1,12 +0,0 @@
-# head
-
-> Output the first part of files.
-> More information: <https://ss64.com/osx/head.html>.
-
-- Output the first few lines of a file:
-
-`head -n {{count_of_lines}} {{filename}}`
-
-- Output the first few bytes of a file:
-
-`head -c {{number_in_bytes}} {{filename}}`