Get rid of the timers infrastructure

It is not needed with a pure state machine.
Note that drag scrolling still has to be ported from using
timers.

kitty_tests/datatypes.py

@@ -7,7 +7,7 @@ from unittest import skipIf
 
 from kitty.config import build_ansi_color_table, defaults
 from kitty.fast_data_types import (
-    REVERSE, ColorProfile, Cursor as C, HistoryBuf, LineBuf, Timers,
+    REVERSE, ColorProfile, Cursor as C, HistoryBuf, LineBuf,
     sprite_map_set_layout, sprite_map_set_limits, sprite_position_for
 )
 from kitty.utils import sanitize_title, wcwidth
@@ -367,23 +367,3 @@ class TestDataTypes(BaseTest):
         a = []
         hb.as_ansi(a.append)
         self.ae(a, ['\x1b[0m' + str(hb.line(i)) + '\n' for i in range(hb.count - 1, -1, -1)])
-
-    def test_timers(self):
-        t = Timers()
-        a = []
-        t.add(10, a.append, (1,))
-        t.add(0, a.append, (2,))
-        t.add_if_missing(20, a.append, (3,))
-        self.ae(t.timeout(), 0)
-        t.call(), t.call()
-        self.ae(a, [2])
-        del a[:]
-        t.add(200, a.append, (4,))
-        d = t.timeout()
-        self.assertGreater(d, 8)
-        self.assertLess(d, 10.1)
-        t.call()
-        self.ae(a, [])
-        t.add(0, a.append, (5,))
-        t.call()
-        self.ae(a, [5])