Don't build the Go TSan test with PIE enabled.

With PIE, it'll segfault because TSan tries to mmap an invalid address. This is
a general problem with TSan.

--- llvm-project-15.0.0.src/compiler-rt/lib/tsan/go/buildgo.sh	2022-09-05 10:48:03.000000000 +0100
+++ llvm-project-15.0.0.src/compiler-rt/lib/tsan/go/buildgo.sh	2022-09-06 17:33:39.318786979 +0100
@@ -41,7 +41,7 @@
 
 if [ "`uname -a | grep Linux`" != "" ]; then
 	OSCFLAGS="-fPIC -Wno-maybe-uninitialized"
-	OSLDFLAGS="-lpthread -fPIC -fpie"
+	OSLDFLAGS="-lpthread -fPIC -fno-pie"
 	SRCS="
 		$SRCS
 		../rtl/tsan_platform_linux.cpp