old_contents: {
      "targets": [{
          "target_name": "offgrid",
          "sources": ["offgrid.cc", "tclled.cc"],
          "defines": ['SPIFILE="/dev/spidev0.0"'],
          "include_dirs": [
              "./build",
              "/opt/vc/include",
              "/opt/vc/include/interface/vcos/pthreads",
              "/opt/vc/include/interface/vmcs_host/linux"
          ],
          "libraries": [
              "-L/opt/vc/lib",
              "-lmmal",
              "-lvcos",
              "-lbcm_host",
              "-lGLESv2",
              "-lEGL",
              "-lm"
          ]
      }]
  }
  
new_contents: {
      "targets": [{
          "target_name": "offgrid",
          "sources": ["offgrid.cc", "tclled.cc"],
          "defines": ['SPIFILE="/dev/spidev0.0"'],
          "include_dirs": [
              "/opt/vc/include",
              "/opt/vc/include/interface/vcos/pthreads",
              "/opt/vc/include/interface/vmcs_host/linux"
          ],
          "libraries": [
              "-L/opt/vc/lib",
              "-lmmal",
              "-lvcos",
              "-lbcm_host",
              "-lGLESv2",
              "-lEGL",
              "-lm"
          ]
      }]
  }
  
subject: Remove an unnecessary include directory.