build: Remove busted output handler utfTerminalDetailed

Busted now contains "gtest", which can be used for the same purpose as
utfTerminalDetailed.

third-party/cmake/BuildLuarocks.cmake

@@ -57,7 +57,6 @@ add_custom_target(stable-busted-deps
 add_custom_command(OUTPUT ${DEPS_BIN_DIR}/busted
   COMMAND ${DEPS_BIN_DIR}/luarocks
   ARGS build https://raw.githubusercontent.com/Olivine-Labs/busted/master/busted-scm-0.rockspec CC=${DEPS_C_COMPILER} LD=${DEPS_C_COMPILER}
-  COMMAND ${CMAKE_COMMAND} -E copy ${PROJECT_SOURCE_DIR}/utfTerminalDetailed.lua
   ${DEPS_INSTALL_DIR}/share/lua/5.1/busted/outputHandlers
   DEPENDS stable-busted-deps)
 add_custom_target(busted

third-party/utfTerminalDetailed.lua

@@ -1,27 +0,0 @@
--- busted output handler that immediately prints file and test names before
--- tests are executed. It simplifies identifying which tests are
--- hanging/crashing
-if package.config:sub(1,1) == '\\' and not os.getenv("ANSICON") then
-  -- Disable colors on Windows.
-  colors = setmetatable({}, {__index = function() return function(s) return s end end})
-else
-  colors = require 'term.colors'
-end
-
-return function(options, busted)
-  local handler = require 'busted.outputHandlers.utfTerminal'(options, busted)
-
-  handler.fileStart = function(name)
-    io.write('\n' .. colors.cyan(name) .. ':')
-  end
-
-  handler.testStart = function(element, parent, status, debug)
-    io.write('\n  ' .. handler.getFullName(element) .. ' ... ')
-    io.flush()
-  end
-
-  busted.subscribe({ 'file', 'start' }, handler.fileStart)
-  busted.subscribe({ 'test', 'start' }, handler.testStart)
-
-  return handler
-end