Remove core/clang/versions.mk and scan-build wrapper

* Use the definitions of ClangDefaultBase and ClangDefaultVersion
  in build/soong/cc/config/global.go.
* scan-build is too old;
  replaced by better clang-tidy's -clang-analyzer-* checks.
* WITH_STATIC_ANALYZER is still effective
  to invoke ccc-analyzer or c++-analyzer.

Test: make checkbuild
Change-Id: Ifd159dd28e529d5d3c9807f5e391911365da8cdb
diff --git a/core/binary.mk b/core/binary.mk
index e3da7d2..334cb2e 100644
--- a/core/binary.mk
+++ b/core/binary.mk
@@ -617,6 +617,9 @@
   my_cc := $(my_cc_wrapper) $(my_cc)
 endif
 
+SYNTAX_TOOLS_PREFIX := \
+    $(LLVM_PREBUILTS_BASE)/$(BUILD_OS)-x86/$(LLVM_PREBUILTS_VERSION)/libexec
+
 ifneq ($(LOCAL_NO_STATIC_ANALYZER),true)
   my_cc := CCC_CC=$(CLANG) CLANG=$(CLANG) \
            $(SYNTAX_TOOLS_PREFIX)/ccc-analyzer