[cmake] Remove install from add_llvm_example_library.

This should fix
http://lab.llvm.org:8011/builders/llvm-clang-lld-x86_64-scei-ps4-windows10pro-fast/builds/30086

llvm/cmake/modules/AddLLVM.cmake

@@ -1058,10 +1058,9 @@ endmacro(add_llvm_example name)
 macro(add_llvm_example_library name)
   if( NOT LLVM_BUILD_EXAMPLES )
     set(EXCLUDE_FROM_ALL ON)
-  endif()
-  add_llvm_library(${name} BUILDTREE_ONLY ${ARGN})
-  if( LLVM_BUILD_EXAMPLES )
-    install(TARGETS ${name} RUNTIME DESTINATION examples)
+    add_llvm_library(${name} BUILDTREE_ONLY ${ARGN})
+  else()
+    add_llvm_library(${name} ${ARGN})
   endif()
 
   set_target_properties(${name} PROPERTIES FOLDER "Examples")