Revert "term: obtain the cursor position via termios.h (#11372)"

This reverts commit af28d09630.

vlib/term/ui/ui_test.v

@@ -1,8 +0,0 @@
-import term.ui
-
-// This test just ensures that programs importing term.ui can compile
-
-fn test_a_simple_term_ui_program_can_be_compiled() {
-	println(ui.color_table)
-	assert true
-}