examples: cleanup curl includes

Only <curl/curl.h> is needed typically and curl/types.h has been removed

docs/examples/certinfo.c

@@ -22,8 +22,6 @@
 #include <stdio.h>
 
 #include <curl/curl.h>
-#include <curl/types.h>
-#include <curl/easy.h>
 
 static size_t wrfu(void *ptr,  size_t  size,  size_t  nmemb,  void *stream)
 {

docs/examples/chkspeed.c

@@ -35,8 +35,6 @@
 #include <time.h>
 
 #include <curl/curl.h>
-#include <curl/types.h>
-#include <curl/easy.h>
 
 #define URL_BASE "http://speedtest.your.domain/"
 #define URL_1M   URL_BASE "file_1M.bin"

docs/examples/curlgtk.c

@@ -13,8 +13,6 @@
 #include <gtk/gtk.h>
 
 #include <curl/curl.h>
-#include <curl/types.h> /* new for v7 */
-#include <curl/easy.h> /* new for v7 */
 
 GtkWidget *Bar;
 

docs/examples/ftpget.c

@@ -22,8 +22,6 @@
 #include <stdio.h>
 
 #include <curl/curl.h>
-#include <curl/types.h>
-#include <curl/easy.h>
 
 /*
  * This is an example showing how to get a single file from an FTP server.

docs/examples/ftpgetinfo.c

@@ -23,8 +23,6 @@
 #include <string.h>
 
 #include <curl/curl.h>
-#include <curl/types.h>
-#include <curl/easy.h>
 
 /*
  * This is an example showing how to check a single file's size and mtime

docs/examples/ftpgetresp.c

@@ -22,8 +22,6 @@
 #include <stdio.h>
 
 #include <curl/curl.h>
-#include <curl/types.h>
-#include <curl/easy.h>
 
 /*
  * Similar to ftpget.c but this also stores the received response-lines

docs/examples/postit2.c

@@ -37,8 +37,6 @@
 #include <string.h>
 
 #include <curl/curl.h>
-#include <curl/types.h>
-#include <curl/easy.h>
 
 int main(int argc, char *argv[])
 {

docs/examples/sepheaders.c

@@ -24,8 +24,6 @@
 #include <unistd.h>
 
 #include <curl/curl.h>
-#include <curl/types.h>
-#include <curl/easy.h>
 
 static size_t write_data(void *ptr, size_t size, size_t nmemb, void *stream)
 {

docs/examples/simplessl.c

@@ -22,9 +22,6 @@
 #include <stdio.h>
 
 #include <curl/curl.h>
-#include <curl/types.h>
-#include <curl/easy.h>
-
 
 /* some requirements for this to work:
    1.   set pCertFile to the file with the client certificate

docs/examples/smooth-gtk-thread.c

@@ -37,8 +37,6 @@
 #include <pthread.h>
 
 #include <curl/curl.h>
-#include <curl/types.h> /* new for v7 */
-#include <curl/easy.h> /* new for v7 */
 
 #define NUMT 4