Remove fatty + cleanup unnused variables

build.sh

diff --git a/build.sh b/build.sh
index b472447..50eb11c 100755
--- a/build.sh
+++ b/build.sh
@@ -52,10 +52,6 @@
         build "--os=ios --variant=emulator"
         if [ "$OPTION" = "clean" ]; then
             exit
-        elif [ "$OPTION" = "release" ]; then
-            config="release"
-        else
-            config="debug"
         fi
         ;;
     # Android supports ABIs via a custom platform format:

skia/renderer/build.sh

diff --git a/skia/renderer/build.sh b/skia/renderer/build.sh
index d9a0571..90232c2 100755
--- a/skia/renderer/build.sh
+++ b/skia/renderer/build.sh
@@ -59,10 +59,6 @@
         build "--os=ios --variant=emulator"
         if [ "$OPTION" = "clean" ]; then
             exit
-        elif [ "$OPTION" = "release" ]; then
-            config="release"
-        else
-            config="debug"
         fi
         ;;
     # Android supports ABIs via a custom platform format: