[libc++abi] Remove the old testit script

It's not used anymore, we use Lit as a test runner now (and have been
for a long time).

libcxxabi/test/testit

@@ -1,126 +0,0 @@
-#!/bin/sh
-#===------------------------------ testit ----------------------------------===#
-#
-# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
-# See https://llvm.org/LICENSE.txt for license information.
-# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
-#
-#===------------------------------------------------------------------------===#
-
-if [ -z "$CC" ]
-then
-	CC=clang++
-fi
-
-if [ -z "$OPTIONS" ]
-then
-	OPTIONS="-std=c++0x -stdlib=libc++"
-fi
-
-case $TRIPLE in
-  *-*-mingw* | *-*-cygwin* | *-*-win*)
-	TEST_EXE=test.exe
-    ;;
-  *)
-    TEST_EXE=a.out
-    ;;
-esac
-
-FAIL=0
-PASS=0
-UNIMPLEMENTED=0
-IMPLEMENTED_FAIL=0
-IMPLEMENTED_PASS=0
-
-afunc()
-{
-	fail=0
-	pass=0
-	if (ls *.fail.cpp > /dev/null 2>&1)
-	then
-		for FILE in $(ls *.fail.cpp); do
-			if $CC $OPTIONS $HEADER_INCLUDE $SOURCE_LIB $FILE $LIBS -o ./$TEST_EXE > /dev/null 2>&1
-			then
-				rm ./$TEST_EXE
-				echo "$FILE should not compile"
-				fail=$(($fail + 1))
-			else
-				pass=$(($pass + 1))
-			fi
-		done
-	fi
-
-	if (ls *.cpp > /dev/null 2>&1)
-	then
-		for FILE in $(ls *.pass.cpp); do
-			if $CC $OPTIONS $HEADER_INCLUDE $SOURCE_LIB $FILE $LIBS -o ./$TEST_EXE
-			then
-				if ./$TEST_EXE
-				then
-					rm ./$TEST_EXE
-					pass=$(($pass + 1))
-				else
-					echo "$FILE failed at run time"
-					fail=$(($fail + 1))
-					rm ./$TEST_EXE
-				fi
-			else
-				echo "$FILE failed to compile"
-				fail=$(($fail + 1))
-			fi
-		done
-	fi
-
-	if [ $fail -gt 0 ]
-	then
-		echo "failed $fail tests in `pwd`"
-		IMPLEMENTED_FAIL=$(($IMPLEMENTED_FAIL + 1))
-	fi
-	if [ $pass -gt 0 ]
-	then
-		echo "passed $pass tests in `pwd`"
-		if [ $fail -eq 0 ]
-		then
-			IMPLEMENTED_PASS=$(($IMPLEMENTED_PASS + 1))
-		fi
-	fi
-	if [ $fail -eq 0 -a $pass -eq 0 ]
-	then
-		echo "not implemented:  `pwd`"
-		UNIMPLEMENTED=$(($UNIMPLEMENTED + 1))
-	fi
-
-	FAIL=$(($FAIL + $fail))
-	PASS=$(($PASS + $pass))
-
-	for FILE in *
-	do
-		if [ -d "$FILE" ];
-		then
-			cd $FILE
-			afunc
-			cd ..
-		fi
-	done
-}
-
-afunc
-
-echo "****************************************************"
-echo "Results for `pwd`:"
-echo "using `$CC --version`"
-echo "with $OPTIONS $HEADER_INCLUDE $SOURCE_LIB"
-echo "----------------------------------------------------"
-echo "sections without tests   : $UNIMPLEMENTED"
-echo "sections with failures   : $IMPLEMENTED_FAIL"
-echo "sections without failures: $IMPLEMENTED_PASS"
-echo "                       +   ----"
-echo "total number of sections : $(($UNIMPLEMENTED+$IMPLEMENTED_FAIL+$IMPLEMENTED_PASS))"
-echo "----------------------------------------------------"
-echo "number of tests failed   : $FAIL"
-echo "number of tests passed   : $PASS"
-echo "                       +   ----"
-echo "total number of tests    : $(($FAIL+$PASS))"
-echo "****************************************************"
-
-exit $FAIL