edje_cc: Fix minor coverity defect

CID 1261439

An assigned value that is never used may represent unnecessary computation,
an incorrect algorithm, or possibly the need for cleanup or refactoring.

In source_fetch_file: A value assigned to a variable is never used. (CWE-563)

Tested compilation of a few EDC files with no breakage.

src/bin/edje/edje_cc_sources.c

@@ -185,8 +185,6 @@ source_fetch_file(const char *fil, const char *filname)
 		  else
 		    p++;
 	       }
-
-	     got_hash = 0;
 	  }
 	if ((file) && (fname))
           source_fetch_file(file, fname);