Take too long Hidden/Post FX/Uber Shader in post processing plugin

2D project (Unity 2018.3.0)

1. I download the plugin of Unity Post Procesing

2. Add to the camera the script https://i.sstatic.net/KzJmi.jpg

3. Configurate only Color Grading https://i.sstatic.net/UCLSI.jpg

4. Try to build and it takes too long cause appear in the charge bar Shaders. https://i.sstatic.net/e51q1.jpg

Any solution here?

1. Go to Assets->PostProcessing->Resources->Shaders
2. Find "Uber" and open the code.

3. At the first lines of the script do you going to see this:

   #pragma multi_compile __ UNITY_COLORSPACE_GAMMA
   #pragma multi_compile __ CHROMATIC_ABERRATION
   #pragma multi_compile __ DEPTH_OF_FIELD DEPTH_OF_FIELD_COC_VIEW
   #pragma multi_compile __ BLOOM BLOOM_LENS_DIRT
   #pragma multi_compile __ COLOR_GRADING COLOR_GRADING_LOG_VIEW
   #pragma multi_compile __ USER_LUT
   #pragma multi_compile __ GRAIN
   #pragma multi_compile __ VIGNETTE_CLASSIC VIGNETTE_MASKED
   #pragma multi_compile __ DITHERING
   

4. Change "#pragma" for "#define" and only stay in pragma if you are going to use this process

In my case I'm only using ColorGrading

#define  multi_compile __ UNITY_COLORSPACE_GAMMA
    #define  multi_compile __ CHROMATIC_ABERRATION
    #define  multi_compile __ DEPTH_OF_FIELD DEPTH_OF_FIELD_COC_VIEW
    #define  multi_compile __ BLOOM BLOOM_LENS_DIRT
    #pragma multi_compile __ COLOR_GRADING COLOR_GRADING_LOG_VIEW
    #define  multi_compile __ USER_LUT
    #define  multi_compile __ GRAIN
    #define  multi_compile __ VIGNETTE_CLASSIC VIGNETTE_MASKED
    #define  multi_compile __ DITHERING