femtobts: Drop the old femtobts calibration utility

A new version can be found inside the osmo-bts repository.

recipes-sysmobts/femtobts-calib/femtobts-calib_git.bb

@@ -1,24 +0,0 @@
-DESCRIPTION = "sysmocom calibration utility"
-SECTION = "kernel"
-LICENSE = "CLOSED"
-DEPENDS = "femtobts-api"
-
-SRC_URI = "git://git@git.sysmocom.de/sysmobts/calib.git;protocol=ssh;branch=master"
-SRCREV = "a54f9c42a22af8ce8b9843e4d5b33718a81dfd0b"
-PV = "0.0+git${SRCPV}"
-PR = "r1"
-S = "${WORKDIR}/git"
-
-# Select the API version
-inherit femtobts_api
-CPPFLAGS += " ${BTS_HW_VERSION} "
-
-
-do_compile() {
-	oe_runmake
-}
-
-do_install() {
-	install -d ${D}${bindir}
-	install -m 0755 ${S}/femto-calib ${D}${bindir}/
-}