remove duplicate license that already exists in meta-oe

Signed-off-by: Derek Straka <derek@asterius.io>

conf/layer.conf

@@ -8,7 +8,5 @@ BBFILE_COLLECTIONS += "rust-layer"
 BBFILE_PATTERN_rust-layer := "^${LAYERDIR}/"
 BBFILE_PRIORITY_rust-layer = "7"
 
-LICENSE_PATH += "${LAYERDIR}/files/common-licenses"
-
 # Override security flags
 require conf/distro/include/rust_security_flags.inc

files/common-licenses/GPL-2.0-with-linking-exception

@@ -1,11 +0,0 @@
-LINKING EXCEPTION
-
-In addition to the permissions in the GNU General Public License, the authors
-give you unlimited permission to link the compiled version of this library into
-combinations with other programs, and to distribute those combinations without
-any restriction coming from the use of this file.  (The General Public License
-restrictions do apply in other respects; for example, they cover modification
-of the file, and distribution when not linked into a combined executable.)
-
-
-insert GPL v2 text here

recipes-deps/libgit2/libgit2.inc

@@ -1,6 +1,6 @@
 SUMMARY = "the Git linkable library"
 HOMEPAGE = "http://libgit2.github.com/"
-LICENSE = "GPL-2.0-with-linking-exception"
+LICENSE = "GPL-2.0-with-GCC-exception"
 
 DEPENDS = "openssl zlib"