refactor: Remove term modules and termcap options

- Removed term.c, term.h and term_defs.h
- Tests for T_* values were removed. screen.c was simplified as a
  consequence(the best strategy for drawing is implemented in the UI layer)
- Redraw functions now call ui.c functions directly. Updates are flushed with
  `ui_flush()`
- Removed all termcap options(they now return empty strings for compatibility)
- &term/&ttybuiltin options return a constant value(nvim)
- &t_Co is still available, but it mirrors t_colors directly
- Remove cursor tracking from screen.c and the `screen_start` function. Now the
  UI is expected to maintain cursor state across any call, and reset it when
  resized.
- Remove unused code

1 files changed, 2 insertions, 2 deletions

diff --git a/src/nvim/os/event.c b/src/nvim/os/event.c
index 9a15bf92d0..c4d38c6a28 100644
--- a/src/nvim/os/event.c
+++ b/src/nvim/os/event.c
@@ -18,7 +18,7 @@
 #include "nvim/vim.h"
 #include "nvim/memory.h"
 #include "nvim/misc2.h"
-#include "nvim/term.h"
+#include "nvim/ui.h"
 #include "nvim/screen.h"
 
 #include "nvim/lib/klist.h"
@@ -162,7 +162,7 @@ void event_process(void)
 
   if (must_redraw) {
     update_screen(0);
-    out_flush();
+    ui_flush();
   }
 }