tectonic: fix redundant reclarations warnings

-Wredundant-decls

Author: ronnychevalier

tectonic/XeTeX_ext.h

@@ -159,7 +159,6 @@ unsigned int read_rgb_a(const char** cp);
 int count_pdf_file_pages(void);
 int find_pic_file(char** path, real_rect* bounds, int pdfBoxType, int page);
 
-void terminate_font_manager(void);
 int maketexstring(const char* s);
 extern void set_cp_code(int fontNum, unsigned int code, int side, int value);
 extern int get_cp_code(int fontNum, unsigned int code, int side);

tectonic/dpx-system.h

@@ -43,9 +43,6 @@
 
 #include <tectonic/core-bridge.h>
 
-/* This is defined in tectonic/ but we all get linked together in the end so it's OK */
-extern string xstrdup(const_string x);
-
 extern void xfseeko (FILE *f, off_t offset, int wherefrom, const_string filename);
 extern off_t xftello (FILE *f, const_string filename);
 

tectonic/xetex0.c

@@ -1,6 +1,7 @@
 #include <tectonic/tectonic.h>
 #include <tectonic/internals.h>
 #include <tectonic/xetexd.h>
+#include <tectonic/XeTeXLayoutInterface.h>
 #include <tectonic/synctex.h>
 #include <tectonic/core-bridge.h>
 

tectonic/xetexd.h

@@ -250,7 +250,6 @@ typedef struct {
 /* Functions originating in texmfmp.c */
 
 extern void getmd5sum(integer s, int file);
-extern boolean input_line (UFILE *);
 extern void get_date_and_time (integer *, integer *, integer *, integer *);
 
 extern str_number get_job_name(str_number);