Installd: Fix bad merge

Don't cut off the leading dex location character.

Bug: 25612095
Change-Id: Iad556a0bb48c57f3c68ee75ee41f14e88d96b1a8
(cherry picked from commit f065032f5331e1739fe32a2db9df8c91905720f9)
diff --git a/cmds/installd/commands.cpp b/cmds/installd/commands.cpp
index a4636ed..cc1a4e2 100644
--- a/cmds/installd/commands.cpp
+++ b/cmds/installd/commands.cpp
@@ -1670,11 +1670,6 @@
         } else if (dexopt_needed == DEXOPT_DEX2OAT_NEEDED) {
             // Pass dex2oat the relative path to the input file.
             const char *input_file_name = get_location_from_path(input_file);
-            if (input_file_name == NULL) {
-                input_file_name = input_file;
-            } else {
-                input_file_name++;
-            }
             run_dex2oat(input_fd.get(),
                         out_fd.get(),
                         image_fd.get(),