Fix duplicate newlines at the end of files

src/lib/version/get_git_tag_or_branch_version.sh

@@ -18,4 +18,3 @@ if [ ! -f "$version_file" ]; then
 fi
 
 sed -n 's/.*PX4_GIT_TAG_OR_BRANCH_NAME\s*"\(.*\)".*/version=\1/p' "$version_file"
-

src/lib/version/version.c

@@ -366,4 +366,3 @@ const char *px4_firmware_oem_version_string(void)
 {
 	return PX4_GIT_OEM_VERSION_STR;
 }
-

src/lib/version/version.h

@@ -206,4 +206,3 @@ __EXPORT uint64_t px4_os_version_binary(void);
 __EXPORT const char *px4_firmware_oem_version_string(void);
 
 __END_DECLS
-