remove references to pre-installed packages as this was changed with the 22 August 2018 version

doc/src/Install_git.txt

@@ -48,15 +48,8 @@ your machine and "unstable" is one of the 3 branches listed above.
 between them at any time using "git checkout <branch name>".)
 
 Once the command completes, your directory will contain the same files
-as if you unpacked a current LAMMPS tarball, with two exceptions:
-
-1) No LAMMPS packages are initially installed in the src dir (a few
-packages are installed by default in the tarball src dir).  You can
-install whichever packages you wish before building LAMMPS; type "make
-package" from the src dir to see the options, and the
-"Packages"_Packages.html doc page for a discussion of packages.
-
-2) The HTML documentation files are not included.  They can be fetched
+as if you unpacked a current LAMMPS tarball, with the exception, that
+the HTML documentation files are not included.  They can be fetched
 from the LAMMPS website by typing "make fetch" in the doc directory.
 Or they can be generated from the content provided in doc/src by
 typing "make html" from the the doc directory.

doc/src/Install_svn.txt

@@ -36,15 +36,8 @@ where "mylammps" is the name of the directory you wish to create on
 your machine.
 
 Once the command completes, your directory will contain the same files
-as if you unpacked a current LAMMPS tarball, with two exceptions:
-
-1) No LAMMPS packages are initially installed in the src dir (a few
-packages are installed by default in the tarball src dir).  You can
-install whichever packages you wish before building LAMMPS; type "make
-package" from the src dir to see the options, and the
-"Packages"_Packages.html doc page for a discussion of packages.
-
-2) The HTML documentation files are not included.  They can be fetched
+as if you unpacked a current LAMMPS tarball, with the exception, that
+the HTML documentation files are not included.  They can be fetched
 from the LAMMPS website by typing "make fetch" in the doc directory.
 Or they can be generated from the content provided in doc/src by
 typing "make html" from the the doc directory.

doc/src/kspace_style.txt

@@ -370,8 +370,7 @@ of these styles.
 
 All of the kspace styles are part of the KSPACE package.  They are
 only enabled if LAMMPS was built with that package.  See the "Build
-package"_Build_package.html doc page for more info.  Note that the
-KSPACE package is installed by default.
+package"_Build_package.html doc page for more info.
 
 For MSM, a simulation must be 3d and one can use any combination of
 periodic, non-periodic, or shrink-wrapped boundaries (specified using

doc/src/pair_buck_long.txt

@@ -154,8 +154,7 @@ details.
 
 This style is part of the KSPACE package.  It is only enabled if
 LAMMPS was built with that package.  See the "Build
-package"_Build_package.html doc page for more info.  Note that the
-KSPACE package is installed by default.
+package"_Build_package.html doc page for more info.
 
 [Related commands:]
 

doc/src/pair_charmm.txt

@@ -249,8 +249,7 @@ All the styles with {coul/charmm} or {coul/charmmfsh} styles are part
 of the MOLECULE package.  All the styles with {coul/long} style are
 part of the KSPACE package.  They are only enabled if LAMMPS was built
 with those packages.  See the "Build package"_Build_package.html doc
-page for more info.  Note that the MOLECULE and KSPACE packages are
-installed by default.
+page for more info.
 
 [Related commands:]
 

doc/src/pair_fep_soft.txt

@@ -344,7 +344,7 @@ USER-FEP package. The {long} versions also require the KSPACE package to be
 installed. The soft {tip4p} versions also require the MOLECULE package to be
 installed. These styles are only enabled if LAMMPS was built with those
 packages.  See the "Build package"_Build_package.html doc page for more
-info. Note that the KSPACE and MOLECULE packages are installed by default.
+info.
 
 [Related commands:]
 

doc/src/pair_lj.txt

@@ -329,8 +329,7 @@ The {lj/cut/coul/long} and {lj/cut/tip4p/long} styles are part of the
 KSPACE package. The {lj/cut/tip4p/cut} style is part of the MOLECULE
 package. These styles are only enabled if LAMMPS was built with those
 packages.  See the "Build package"_Build_package.html doc page for
-more info.  Note that the KSPACE and MOLECULE packages are installed
-by default.
+more info.
 
 [Related commands:]
 

doc/src/pair_lj_long.txt

@@ -219,8 +219,7 @@ different levels of the rRESPA hierarchy.  See the
 
 These styles are part of the KSPACE package.  They are only enabled if
 LAMMPS was built with that package.  See the "Build
-package"_Build_package.html doc page for more info.  Note that the
-KSPACE package is installed by default.
+package"_Build_package.html doc page for more info.
 
 [Related commands:]