tidy-up: avoid word 'just'

Cherry-picked from #1017

buildconf

@@ -1,7 +1,7 @@
 #!/bin/sh
 
 echo "***" >&2
-echo "*** Do not use buildconf. Instead, just use: autoreconf -fi" >&2
+echo "*** Do not use buildconf. Instead, use: autoreconf -fi" >&2
 echo "*** Doing it for you now, but buildconf may disappear in the future." >&2
 echo "***" >&2
 

docs/INSTALL_CMAKE.md

@@ -89,8 +89,8 @@ The previous examples used CMake to start the build using:
 
   cmake --build .
 
-Alternatively, once CMake has configured your project, you can just
-use your own build tool, e.g GNU make, Visual Studio, etc., from that
+Alternatively, once CMake has configured your project, you can use
+your own build tool, e.g GNU make, Visual Studio, etc., from that
 point onwards.
 
 Tests
@@ -130,16 +130,16 @@ How can I use libssh2 in my project if it also uses CMake?
 ----------------------------------------------------------
 
 If your own project also uses CMake, you do not need to worry about
-setting it up with libssh2's location.  Just add just the following
-lines and CMake will find libssh2 on your system, set up the necessary
-paths and link the library with your binary.
+setting it up with libssh2's location. Add the following lines and
+CMake will find libssh2 on your system, set up the necessary paths and
+link the library with your binary.
 
     find_package(Libssh2 REQUIRED CONFIG)
     target_link_libraries(my_project_target Libssh2::libssh2)
 
 Of course, you still have to make libssh2 available on your system
 first.  You can install it in the traditional way shown above, but you
-do not have to.  Instead you can just build it, which will export its
+do not have to.  Instead you can build it, which will export its
 location to the user package registry [3] where `find_package` will
 find it.
 

docs/libssh2_channel_set_blocking.3

@@ -14,7 +14,7 @@ libssh2_channel_set_blocking(LIBSSH2_CHANNEL *channel, int blocking);
 \fIblocking\fP - Set to a non-zero value to make the channel block, or zero to
 make it non-blocking.
 
-Currently this is just a short cut call to
+Currently this is a short cut call to
 .BR libssh2_session_set_blocking(3)
 and therefore will affect the session and all channels.
 .SH RETURN VALUE

docs/libssh2_free.3

@@ -11,7 +11,7 @@ libssh2_free(LIBSSH2_SESSION *session, void *ptr);
 .SH DESCRIPTION
 Deallocate memory allocated by earlier call to libssh2 functions.  It
 uses the memory allocation callbacks provided by the application, if
-any.  Otherwise, this will just call free().
+any.  Otherwise, this will call free().
 
 This function is mostly useful under Windows when libssh2 is linked to
 one run-time library and the application to another.