cmake: Rename uninstall target to prevent collisions

Cmake does not have an uninstall function, and multiple repositories
cannot have targets with the same name. The 'uninstall' target is to
generic, so renaming this target to 'uninstall-Vulkan-Tools'.
diff --git a/BUILD.md b/BUILD.md
index 747aa16..78a6d92 100644
--- a/BUILD.md
+++ b/BUILD.md
@@ -194,7 +194,7 @@
 
 To uninstall the files from the system directories, you can execute:
 
-    sudo make uninstall
+    sudo make uninstall-Vulkan-Tools
 
 ### Linux Tests
 
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 32c91d4..fa9a3d3 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -103,7 +103,7 @@
         "${CMAKE_CURRENT_BINARY_DIR}/cmake_uninstall.cmake"
         IMMEDIATE @ONLY)
 
-    add_custom_target(uninstall
+    add_custom_target(uninstall-Vulkan-Tools
         COMMAND ${CMAKE_COMMAND} -P ${CMAKE_CURRENT_BINARY_DIR}/cmake_uninstall.cmake)
 endif()