phase 2: remove CodeWriter

spec/codewriter_spec.lua

@@ -1,30 +0,0 @@
---- @diagnostic disable: undefined-field, need-check-nil, need-check-nil
-local CodeWriter = require 'u.codewriter'
-
-describe('CodeWriter', function()
-  it('should write with indentation', function()
-    local cw = CodeWriter.new()
-    cw:write '{'
-    cw:indent(function(cw2) cw2:write 'x: 123' end)
-    cw:write '}'
-
-    assert.are.same(cw.lines, { '{', '  x: 123', '}' })
-  end)
-
-  it('should keep relative indentation', function()
-    local cw = CodeWriter.new()
-    cw:write '{'
-    cw:indent(function(cw2)
-      cw2:write 'x: 123'
-      cw2:write '  y: 123'
-    end)
-    cw:write '}'
-
-    assert.are.same(cw.lines, {
-      '{',
-      '  x: 123',
-      '    y: 123',
-      '}',
-    })
-  end)
-end)