[TEST-ONLY][CAS] Fix clang caching testing after search path change

Update clang CAS tests after search path change that results in less
directories being captured.

Author: cachemeifyoucan

clang/test/CAS/depscan-prefix-map.c

@@ -64,7 +64,6 @@
 //
 // CHECK-ROOT:      tree
 // CHECK-ROOT-SAME:             /^objroot/test/CAS/{{$}}
-// CHECK-ROOT-NEXT: tree {{.*}} /^sdk/Library/Frameworks/{{$}}
 // CHECK-ROOT-NEXT: file {{.*}} /^source/depscan-prefix-map.c{{$}}
 // CHECK-ROOT-NEXT: file {{.*}} /^toolchain/usr/lib/clang/1000/include/stdarg.h{{$}}