disable cotire as it's deprecated and breaks the build with newer libc++

Index: src/test/CMakeLists.txt
--- src/test/CMakeLists.txt.orig
+++ src/test/CMakeLists.txt
@@ -77,5 +77,3 @@ target_link_libraries(lucene++-tester
 # link args
 ####################################
 target_compile_options(lucene++-tester PRIVATE -DLPP_EXPOSE_INTERNAL)
-
-cotire(lucene++-tester)
