chmod.2, connect.2, recv.2: srcfix

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

man2/chmod.2

@@ -37,7 +37,6 @@ chmod, fchmod, fchmodat \- change permissions of a file
 .B #include <sys/stat.h>
 .PP
 .BI "int chmod(const char *" pathname ", mode_t " mode );
-.br
 .BI "int fchmod(int " fd ", mode_t " mode );
 
 .BR "#include <fcntl.h>" "           /* Definition of AT_* constants */"

man2/connect.2

@@ -70,7 +70,6 @@ connect \- initiate a connection on a socket
 .SH SYNOPSIS
 .nf
 .BR "#include <sys/types.h>" "          /* See NOTES */"
-.br
 .B #include <sys/socket.h>
 .PP
 .BI "int connect(int " sockfd ", const struct sockaddr *" addr ,

man2/recv.2

@@ -46,7 +46,6 @@ recv, recvfrom, recvmsg \- receive a message from a socket
 .\" .br
 .nf
 .B #include <sys/types.h>
-.br
 .B #include <sys/socket.h>
 .PP
 .BI "ssize_t recv(int " sockfd ", void *" buf ", size_t " len ", int " flags );