android: Drop obsolete build tools version check from configure.ac

`build.gradle` no longer contains a specific `buildToolsVersion`
since

    commit a93770e6d0d2fcc5a2eefbed546acee055833fd4
    Date:   Fri Mar 6 12:16:24 2020 +0100

        android: Update gradle

        The previous version e.g. did not support building
        Android App Bundles yet.

        Drop explicit 'buildToolsVersion', as suggested in the warning
        during build:

        > WARNING: The specified Android SDK Build Tools version (27.0.3) is ignored,
        > as it is below the minimum supported version (28.0.3) for Android Gradle
        > Plugin 3.6.1.
        > Android SDK Build Tools 28.0.3 will be used.
        > To suppress this warning, remove "buildToolsVersion '27.0.3'" from your build.gradle
        > file, as each version of the Android Gradle Plugin now has a default
        > version of the build tools.

so the sed expression in configure.ac was evaluating to an empty
string and only the existence of `"$ANDROID_SDK_DIR/build-tools/`
was checked.
As mentioned in a93770e6d0d2fcc5a2eefbed546acee055833fd4,
each version of the Android Gradle Plugin now has a default
version of the build tools. It takes care of downloading and
installing that one as necessary.

Change-Id: Ic8528c5dc238dccb35ccf215945ef935e8c3a89c
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/133238
Tested-by: Jenkins
Reviewed-by: Michael Weghorn <m.weghorn@posteo.de>

0 files changed, 0 insertions, 0 deletions